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Casona Sforza

Puerto Escondido, Oaxaca, Mexico11 suites · Casona Sforza

Researched and sourced by hand. Last reviewed 2026-08-19.

The hotel seen from the air at sunset, two rows of pale barrel-vaulted brick roofs stepping down through coastal scrub to the beach and the Pacific.The vaults lit from within at night above the circular pool, each arch open to the terrace with curtains drawn back and lamps hanging under the brick ceilings.A long timber-framed walkway at dusk, linen curtains hung between the posts, planted pots along both sides and the pool glowing at the far end.A suite under its brick vault, a clerestory window running along the top of the arch and louvered timber doors folded open onto a terrace with a round bathtub.Morning light falling across a patterned brick wall behind the bed, with the louvered doors of the suite open to a terrace and the sea beyond.A private plunge pool on a ground-floor terrace beside a bamboo screen and a climbing plant, with louvered doors open into the vaulted bedroom.A bathroom of brick and poured stone with two carved basins on a long shelf, a round mirror, and timber-louvered windows opening onto green scrub.The view from an upper terrace over the curved brick roofs and a timber bridge to the ocean, with palms in clay pots framing the parapet.Guests dining at night inside the open arches, seen from the garden through hanging curtains, with warm lamplight on the brickwork and a stair climbing between the volumes.A piece of grilled white fish on a pale sauce, seen from above on a cream plate, dressed with two spoonfuls of herb paste.Sunset seen from a shaded cabana of brick and timber, with cushions and a low sofa in the foreground and the still pool reflecting the sky.
Photographs from Casona Sforza's published media, shown from the publisher's own server. They show the property, not our assessment of it.
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The settingThe suitesThe restaurantThe pool

The setting

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The pool

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The hotel seen from the air at sunset, two rows of pale barrel-vaulted brick roofs stepping down through coastal scrub to the beach and the Pacific.

A building that cools itself

Casona Sforza is eleven suites in ten brick vaults on the sand at La Barra de Colotepec, designed by Alberto Kalach and built from bricks made by hand nearby. The vault is not a style decision. It is seismically stable, it lets air move through a double-height room, and the pale brick reflects the sun and holds the night's cool in its mass, which is why the rooms stay comfortable with little or no mechanical air conditioning. Every archway carries a custom wooden gate with small blinds, so a guest shades a room, or opens it to the breeze, by moving a shutter rather than a thermostat. A sealed and conditioned envelope is the hospitality default, and it is the reason most hotel rooms have air nobody can describe. This building never had that problem to solve.

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Named to the maker

The materials are documented further than most hotels ever manage. Sand-coloured brick hand-made by local artisans. Louvered doors in Macuili and oak. Rugs woven in Teotitlan del Valle, palm-leaf lamps from Veracruz, curtains, chairs and hammocks from the Yucatan. Bath products made in house by the Pueblo del Sol artisan community, and raw linen and cotton in the rooms. The furniture timber follows a stated rule against excessive logging, taken from trees that have finished their natural cycle. Knowing what a guest touches and breathes near for a week is the whole of Materials and Textiles, and this record already carries the makers' names. What is missing is the chemistry: no emissions class, no sealant, no paint.

The gap worth naming

Casona Sforza is the rare property whose water gets described at all. The pool is salt chlorinated and the wastewater runs through activated charcoal instead of a septic tank, because the aquifer sits under the site. Neither has a published test result behind it, and nothing is published about a tap. Nothing is published on wireless topology or field levels in a sleeping area, and nothing on background noise, so two pathways sit empty on a property that would probably read well on both. The land itself is the strongest line here: less than thirty percent of the site was cleared, and the mangroves, oaks and cypress that were there are still there.

What this place offers

Cooled by brick, not by plantPale local brick and vaulted ceilings keep rooms cool with little or no air conditioning.

A shutter on every archCustom wooden gates with blinds shade each suite without closing the view or the breeze.

Charcoal in place of a septic tankWastewater runs through an activated charcoal plant to protect the aquifer under the site.

Brick made by hand, linen left rawArtisan brick and timber inside, raw linen and cotton on the beds, amenities made in house.

Under a third of the site clearedMangroves, oaks and cypress were left standing and the buildings were fitted around them.

Catch handled by ikejimeThe daily fish is dispatched by a named method, and honey, vanilla and coffee come off the hotel's own project.

Casona Sforza is a hotel in Puerto Escondido, Oaxaca, Mexico. We read what it publishes about the eight things a building does to your biology and scored the evidence 12 of 24. Last verified 2026-08-19. Air Quality is its best-documented pathway; nothing is published on EMF Harmony.

12 / 248 of 8 pathways assessed

Each pathway scores 0 to 3 on the quality of the evidence published, not on the quality of the property. Open a row for every claim and its source.

Air Quality

2

Specified2 of 3 · Filtration, ventilation and what the air is measured at.

  • Specified

    The cooling strategy is published as a material one: local brick with a pale surface that reflects sunlight, used so rooms stay cool without air conditioning. No air change rate or reading is published.

    The volumes are constructed of local bricks – a material that helps keep interior rooms cool without the use of air conditioning. The bricks have a pale yellow hue that reflects sunlight and further aids in cooling.
    PublishedDezeen, Arched volumes define Casona Sforza resort in Mexico by Alberto Kalach. Checked 2026-08-19.
  • Specified

    The architect describes the interiors as naturally ventilated, cooled by the thermal mass of the brick walls and ceilings, with the buildings sited to take the ocean breeze and offshore winds.

    More pragmatically, the thermal mass of the brick walls and ceilings help cool the naturally ventilated interiors.
    PublishedInterior Design, Inside Mexico's Casona Sforza Hotel. Checked 2026-08-19.
  • Claimed

    A third party publisher records the vault-and-arch construction as a passive cooling system that keeps rooms temperate without heavy air conditioning, with no ventilation figure given.

    Casona Sforza was designed by celebrated Mexican architect Alberto Kalach using ancient vault-and-arch construction in locally sourced brick, a passive cooling system that keeps rooms naturally temperate without heavy AC.
    PublishedGirls Who Eat, Non-Toxic Travel Made Simple, The non-toxic hotels that are actually worth it. Checked 2026-08-19.

What is not published

  • What filter grade is fitted to guest room air handling, for example MERV 13 or HEPA H13?
  • What is the fresh air supply rate per person in a guest room?
  • Are carbon dioxide, particulate or volatile organic compound levels measured, and are the readings published?
  • Is there a mould inspection and remediation protocol, and when was it last run?
  • Are there gas cooktops, fireplaces or other combustion sources inside guest rooms?

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Water Integrity

2

Specified2 of 3 · Source, treatment, tested panels and how drinking water arrives.

  • Specified

    Wastewater is published as running through an activated charcoal treatment plant rather than septic tanks, with the stated reason of protecting the local aquifer. No volume or test result is published.

    Other sustainable features include a wastewater treatment plant operated with activated charcoal (in lieu of septic tanks that might damage the local aquifer)
    PublishedInterior Design, Inside Mexico's Casona Sforza Hotel. Checked 2026-08-19.
  • Specified

    The circular pool at the centre of the hotel is published as salt chlorinated, which names the disinfection route. No residual level or water analysis is published.

    a long terrace and the brick barrel-vaulted roofs of guest suites intersect the salt-chlorinated pool's concentric circular forms
    PublishedInterior Design, Inside Mexico's Casona Sforza Hotel. Checked 2026-08-19.

What is not published

  • What is the water source, and what treatment is applied before it reaches a guest room?
  • Is there a published contaminant test panel, and which laboratory ran it?
  • Is shower and bath water filtered, and to what specification?
  • How are pools and spas sanitised, and is the chemistry published?
  • How is drinking water delivered, and is it treated on site?

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Light Rhythm

2

Specified2 of 3 · Circadian lighting specification, flicker, blackout and daylight.

  • Specified

    Daylight and darkness in each suite are controlled by a named physical device: a custom wooden gate with small blinds on every archway, which shades the room without closing the view.

    A custom-made wooden gate is applied to each archway with small blinds that provide privacy without completely obscuring the view of the landscape, and that also allows air circulation to create a more pleasant climate inside each of the eleven rooms
    PublishedArchDaily, Sforza House / Taller de Arquitectura X / Alberto Kalach. Checked 2026-08-19.
  • Claimed

    Suites are described as carrying clerestories above louvered doors, so daylight enters high in the vault. No colour temperature, lux level or blackout specification is published.

    The property's public spaces, at right, are completely open to the elements, while guest suites, behind, feature clerestories and louvered doors in Macuili and oak for privacy.
    PublishedInterior Design, Inside Mexico's Casona Sforza Hotel. Checked 2026-08-19.

What is not published

  • Is guest room lighting tunable or circadian, and what specification is published?
  • What colour temperatures are used in the evening, and are fixtures flicker free?
  • Do sleeping areas have full blackout, and is it specified?
  • What daylight access does a typical room have?
  • Is exterior lighting shielded or reduced overnight?

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EMF Harmony

0

Not published0 of 3 · Wired versus wireless topology, and what is measured where people sleep.

We looked for published information on EMF Harmony and found none. That is a gap in the public record, not a finding about the property.

What is not published

  • Are guest rooms wired for data, or is access wireless only?
  • Where are wireless access points and smart meters placed relative to the bed?
  • Have field levels been measured in sleeping areas, and by whom?
  • Can a guest have wireless disabled in their room on request?
  • Is any shielded cabling or shielding material specified in the build?

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Materials and Textiles

2

Specified2 of 3 · Named materials, finishes, bedding composition and cleaning chemistry.

  • Specified

    The building material is named to its maker and its rule: sand-coloured bricks hand-crafted by local artisans, with synthetic products avoided wherever possible. No emissions class or finish chemistry is published.

    Hand-crafted by local artisans, the sandy-hued bricks represent the Casona's imperative to build with locally produced materials and avoid synthetic products wherever possible.
    PublishedInterior Design, Inside Mexico's Casona Sforza Hotel. Checked 2026-08-19.
  • Specified

    Soft furnishings are named by craft and by place of making: rugs woven in Teotitlan del Valle, palm-leaf lamps from Veracruz, curtains, chairs and hammocks from the Yucatan.

    Rugs were woven in the small village of Teotitlán del Valle, and palm-leaf lamps came from the port city of Veracruz. Curtains, chairs and hammocks were fabricated in the Yucatán Peninsula.
    PublishedDezeen, Arched volumes define Casona Sforza resort in Mexico by Alberto Kalach. Checked 2026-08-19.
  • Specified

    A third party publisher records the bathroom amenities as made in house by the Pueblo del Sol artisan community and the room textiles as raw linen and cotton.

    Organic bath products (honey soap, shampoo) are made in-house by the Pueblo del Sol indigenous artisan community, and raw linen and cotton textiles are in all rooms.
    PublishedGirls Who Eat, Non-Toxic Travel Made Simple, The non-toxic hotels that are actually worth it. Checked 2026-08-19.
  • Claimed

    The property states a sourcing rule for its furniture timber: no excessive logging, and wood taken from trees that have completed their natural cycle. No species or supplier is named.

    Following the statute of no excessive logging but rather using wood from trees that have completed their natural cycle.
    PublishedCasona Sforza, Sustainable Sphere. Checked 2026-08-19.

What is not published

  • What are the mattresses made of, and are they treated with flame retardants?
  • What is the fibre content of the linen, and is it certified, for example to GOTS or OEKO TEX?
  • Which paints, adhesives and sealants were specified, and are they low emission?
  • What cleaning and laundry products are used, and is the list published?
  • Are there named low emission certifications on the flooring or joinery?

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Food and Kitchen

2

Specified2 of 3 · Sourcing, on site growing, cookware, kitchen water and additive discipline.

  • Specified

    Three kitchen ingredients are traced to a named growing project the hotel funds: honey, vanilla and coffee from Pueblo del Sol in the Oaxacan mountains.

    we use honey, vanilla, and coffee as ingredients grown in our sister project, Pueblo del Sol, in the Oaxacan mountains
    PublishedCasona Sforza, La Boveda Restaurant. Checked 2026-08-19.
  • Specified

    The fish handling method is named. Daily catch is dispatched by ikejime, and the produce is stated to be non-GMO and local. No grower, boat or certification is named.

    Daily fishing is carried out using the ikejime technique, promoting responsible and respectful fishing practices in the marine ecosystem.
    PublishedCasona Sforza, Sustainable Sphere. Checked 2026-08-19.
  • Claimed

    The kitchen is described as farm to table, drawing on the orchards of local producers who work seasonal and non-intensive harvest cycles, with no share of the menu quantified.

    Sforza House is committed to a culinary proposal based on the farm-to-table principle, guaranteeing the freshness of the ingredients of each dish, which come from the orchards of local producers that respect the seasonal and non-intensive harvest cycles.
    PublishedArchDaily, Sforza House / Taller de Arquitectura X / Alberto Kalach. Checked 2026-08-19.

What is not published

  • What share of produce is grown on site or sourced locally, and is it verified?
  • Which cooking oils are used, and is the policy published?
  • What cookware is used in the kitchen?
  • Is kitchen and ice water filtered, and to what specification?
  • Is there a published position on additives, preservatives or allergens?

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Biophilic and Healing Design

2

Specified2 of 3 · Nature access, views, volume and natural material contact, designed with intent.

  • Specified

    The siting rule is published as a number: less than 30 percent of the one-acre site was cleared, and the mangroves, oaks and cypress that were there were left standing.

    They cleared less than 30 percent of the natural landscape of mangroves, oaks, and cypress. "We sited the buildings to cause the least amount of intrusion and to take advantage of the views, ocean breezes, and offshore winds," notes Kalach
    PublishedInterior Design, Inside Mexico's Casona Sforza Hotel. Checked 2026-08-19.
  • Specified

    The scheme is attributed to a named architect and studio, Alberto Kalach of Taller de Arquitectura X, and to a published form decision: ten brick vaults of varying height facing the Pacific, arranged around a circular pool.

    The resort consists of arched volumes of varying heights, which are arranged in an asymmetrical manner. The vaulted shape offers several benefits, including being able to withstand earthquakes and allowing positive energy to flow into the suites, the team said.
    PublishedDezeen, Arched volumes define Casona Sforza resort in Mexico by Alberto Kalach. Checked 2026-08-19.
  • Claimed

    The property states that only 30 percent of the land was built on and that the planted areas carry endemic vegetation, with the design described as following principles of bio-geometry.

    We have utilized only 30% of the land, allowing nature to retain its space. The design of our facilities is based on principles of bio-geometry, respecting the harmony between the built environment and the surrounding nature. Our green areas feature endemic vegetation, preserving local biodiversity.
    PublishedCasona Sforza, Sustainable Sphere. Checked 2026-08-19.

What is not published

  • Does every guest room have direct outdoor access or an operable opening?
  • What is the published design intent behind the natural materials used?
  • What are the typical ceiling heights and room volumes?
  • Was the landscape designed with native planting, and is the palette published?

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Sound and Sensory Ecology

0

Not published0 of 3 · Measured background noise, separation between keys, and scent load.

We looked for published information on Sound and Sensory Ecology and found none. That is a gap in the public record, not a finding about the property.

What is not published

  • What is the measured background noise level in a guest room at night?
  • What acoustic separation is specified between adjoining keys?
  • How loud is the guest room air conditioning at its lowest setting?
  • Is fragrance diffused into guest rooms or public areas, and can it be declined?

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38 open questions could be answered with information this property already holds. Answer these for this property

What is not publishedthe gaps we looked for and did not find

Nothing is published on wireless topology, access point placement or field levels in a sleeping area, so EMF Harmony is empty. Nothing is published on background noise levels, separation between suites or plant noise, so Sound and Sensory Ecology is empty, and the acoustic material that does exist is about the sound of the sea rather than about what a room measures. The pool is described as salt chlorinated and the wastewater plant as activated charcoal, and no test result, litres treated or mineral profile is published for either, nor anything at all about what comes out of a tap. The kitchen names its own farm project for honey, vanilla and coffee and says the rest is local and non-GMO, without naming a grower, a cultivar or a certification. Lighting is described only as daylight through clerestories and louvered gates: no colour temperature, no dimming schedule, no blackout provision.

Other standards held

Useful context. A held standard does not move a pathway score on its own. It moves a score only through the evidence that standard publishes.

  • MICHELIN Key, One MICHELIN Key, a very special stay Awarded by MICHELIN Guide. Source
  • Girls Who Eat Gold Star rating, Best-in-class properties meeting 4+ of our standards, with no synthetic fragrance in main spaces or beauty products, and verified non-toxic practices across areas like air quality, cleaning products, food sourcing, and bedding Awarded by Girls Who Eat, Non-Toxic Travel Made Simple. Source
Verification recordwho checked this, how, and when
Method
Desk research of published sources, each claim cited
Reviewed by
Certified Spaces Standards Inc.
Last verified
2026-08-19
Not published is not unsafehow to read these scores, and what this index does not promise

A low score means a property has not published information. It does not mean the property is unsafe, unhealthy or poorly run.

These scores measure disclosure. These scores describe disclosure, not property quality. This index has no commercial relationship with the properties listed unless a badge on the listing says otherwise.

Conditions change, and we will not always know. Every record is a snapshot of what a property had published when we read it, and that date is on the page. Conditions change: a property can refit, change suppliers or replace a system at any time, and nothing requires it to tell us. We re-read records and ask properties directly for updates, but there will always be a gap between what is true today and what was published when we looked. Use this as a frame of reference for what to ask, not as a substitute for asking. Take your own questions to the property before you book, and tell us if you find something we have wrong.

We report what properties publish. We do not inspect, certify or vouch for any property on this index unless a listing says we assessed it on site, and we accept no responsibility for decisions made or outcomes experienced on the basis of what you read here.

Questions travelers askwater, air, EMF, and whether it is worth it

Does Casona Sforza publish water quality testing?

Yes, at specification level: a named system, supplier or standard is on the record, without a published measurement. Scored 2 of 3.

What is the air quality like in the rooms?

We can only report what is published about the rooms themselves. Yes, at specification level: a named system, supplier or standard is on the record, without a published measurement. Scored 2 of 3.

Is Casona Sforza low-EMF?

No measurement is published. Only 15 of the 92 properties we have researched publish any bedroom EMF information at all, so this is the industry norm, not an outlier.

Is Casona Sforza worth it?

We score evidence, not experience. On evidence, it ranks 9 of 92 researched records. The strongest documented pathways are Air Quality and Water Integrity; nothing is published on EMF Harmony or Sound and Sensory Ecology.

12 / 24

Evidence score · 8 of 8 pathways

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