Nekajui, a Ritz-Carlton Reserve at a glance
Nekajui, a Ritz-Carlton Reserve is a tented retreat in Peninsula Papagayo, Costa Rica. We read what it publishes about the eight things a building does to your biology and scored the evidence 7 of 24. Last verified 2026-08-17. Materials and Textiles is its best-documented pathway; nothing is published on Water Integrity.
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 at Nekajui, a Ritz-Carlton Reserve: Claimed (1/3)
1Claimed, 1 of 3.
Claimed1 of 3 · Filtration, ventilation and what the air is measured at.
What the evidence shows
- Claimed
Gensler, the executive architect, publishes that the resort's open spaces are naturally ventilated, and lists covered terraces with natural ventilation as a project feature, with no ventilation rate, filtration grade or air measurement given.
Site-sensitive design features tree house-style architecture inspired by the natural landscape with naturally ventilated open spaces that embrace the warm climate.
PublishedGensler, Nekajui Ritz-Carlton Reserve | Projects. Checked 2026-08-17. - Claimed
A December 2025 Forbes article describes cross ventilation, deep roof overhangs and oversized sliding doors as the resort's climate response, naming no mechanical system, filter or rate.
Deep roof overhangs, cross-ventilation strategies, and oversized sliding doors respond directly to the region's climate and longstanding principles of tropical modernism.
PublishedForbes, At Nekajui In Costa Rica, Architects And Designers Let The Land Lead. Checked 2026-08-17. - Claimed
Luxury Frontiers, the designer of the three treetop tents, publishes that those tents are built with canvas and roll-up mesh openings, with no filtration, ventilation rate or air measurement given, and the statement covers three keys rather than the resort.
Constructed with breathable canvas and roll-up mesh openings, they invite fresh air, natural sounds, and wildlife encounters
PublishedLuxury Frontiers, The Treetop Tents of Nekajui, a Ritz-Carlton Reserve. Checked 2026-08-17.
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?
Water Integrity at Nekajui, a Ritz-Carlton Reserve: Not published (0/3)
0Not published, 0 of 3.
Not published0 of 3 · Source, treatment, tested panels and how drinking water arrives.
We looked for published information on Water Integrity and found none. That is a gap in the public record, not a finding about the property.
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?
Light Rhythm at Nekajui, a Ritz-Carlton Reserve: Claimed (1/3)
1Claimed, 1 of 3.
Claimed1 of 3 · Circadian lighting specification, flicker, blackout and daylight.
What the evidence shows
- Claimed
A dated third party review states that every room has floor to ceiling sliding glass windows, with no glazing specification, light transmittance figure or blackout provision published.
Floor-to-ceiling sliding-glass windows in all rooms help blur the line between indoor and outdoor spaces.
PublishedAFAR, In-Depth Review of Nekajui, a Ritz-Carlton Reserve. Checked 2026-08-17.
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?
EMF Harmony at Nekajui, a Ritz-Carlton Reserve: Not published (0/3)
0Not published, 0 of 3.
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?
Materials and Textiles at Nekajui, a Ritz-Carlton Reserve: Specified (2/3)
2Specified, 2 of 3.
Specified2 of 3 · Named materials, finishes, bedding composition and cleaning chemistry.
What the evidence shows
- Specified
Design press names the materials used in guest rooms and suites: custom teak casework, Arbol de Guanacaste wood, Fusion Quartzite stone and Marazzi tiles. No emission standard, finish, adhesive or sealant specification accompanies them.
Local materials and furnishings are utilised throughout the elegant rooms and suites, with a striking use of custom teak casework and the local Arbol de Guanacaste wood, as well as Fusion Quartzite stone and handmade Marazzi tiles.
PublishedWallpaper*, Nekajui, a Ritz-Carlton Reserve hotel review. Checked 2026-08-17. - Specified
A November 2025 reviewer's account of a stay names Frette as the supplier of the bed linens and robes. No fibre content, weave or textile certification is published.
The bed linens are Frette, which already tells you a lot about the priorities here.
PublishedSebastian Luxe Travel, Nekajui Ritz-Carlton Reserve Review: Costa Rica Luxury. Checked 2026-08-17.
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?
Food and Kitchen at Nekajui, a Ritz-Carlton Reserve: Claimed (1/3)
1Claimed, 1 of 3.
Claimed1 of 3 · Sourcing, on site growing, cookware, kitchen water and additive discipline.
What the evidence shows
- Claimed
The operator's own opening announcement, dated 25 February 2025, states that the lobby bar uses ingredients from gardens on the resort. No share of produce, crop list, grower or verification is published.
La Casona Bar reimagines the traditional lobby bar with a botanical twist, serving local herb-and floral-infused cocktails crafted with ingredients sourced directly from the resort's gardens, complemented by a curated selection of delectable tapas, snacks and quick bites.
PublishedMarriott International, Nekajui, a Ritz-Carlton Reserve Debuts as the Ultimate Ultra-Luxury Escape on Peninsula Papagayo. Checked 2026-08-17.
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?
Biophilic and Healing Design at Nekajui, a Ritz-Carlton Reserve: Specified (2/3)
2Specified, 2 of 3.
Specified2 of 3 · Nature access, views, volume and natural material contact, designed with intent.
What the evidence shows
- Specified
The design architect publishes the method used to set the buildings on the site: a survey of every tree, mapped against animal habitats, physical constraints and views, carried out with the landscape architect EDSA.
We worked alongside EDSA to survey all the trees, creating a map that plotted these against animal habitats, other physical constraints, and natural assets such as views.
Published10 Design, Nekajui, a Ritz-Carlton Reserve. Checked 2026-08-17. - Specified
Design press publishes that the stone walls were built from material taken from the site itself and that the chapel tiles were hand laid by Costa Rican artisans, giving a named provenance for the natural material a guest is in contact with.
Every stone wall was built by local craftsmen using material sourced directly from the site, and the art and design pieces throughout the resort are by Costa Rican artisans, including the 650,000 hand-laid tiles in the chapel.
PublishedWallpaper*, Nekajui, a Ritz-Carlton Reserve hotel review. Checked 2026-08-17. - Specified
Luxury Frontiers publishes the siting and structural method for the three treetop tents, which are set on piles along the natural contours above the forest floor.
Positioned along natural contour lines to minimize disruption, the tents are elevated on piles to protect the forest floor
PublishedLuxury Frontiers, The Treetop Tents of Nekajui, a Ritz-Carlton Reserve. Checked 2026-08-17. - Claimed
The architects publish their design intent for the site as protecting existing planting and building around the terrain, without naming a planting palette or species.
Our approach was to listen to what the site told us – protecting native flora, integrating mature trees, and building around the existing terrain.
PublishedWallpaper*, Nekajui, a Ritz-Carlton Reserve hotel review. Checked 2026-08-17.
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?
Sound and Sensory Ecology at Nekajui, a Ritz-Carlton Reserve: Not published (0/3)
0Not published, 0 of 3.
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?
38 open questions could be answered with information this property already holds. Answer these for this property
Best for, and not ideal for
Not ideal for
- anyone who needs EMF data: nothing is published
- anyone who needs water testing data: nothing is published
- light sleepers: nothing is published about the sound environment
Where you’ll be
Peninsula Papagayo, Costa Rica
10.6301, -85.6833 · Open the full map · © OpenStreetMap contributors
What is not publishedthe gaps we looked for and did not find
Air: no filter grade, fresh air supply rate, or carbon dioxide, volatile organic compound or particulate reading is published, and no mould protocol is published. What exists describes natural ventilation only. A wood-fired oven is published at the Niri Beach Club and the three treetop tents open to outside air through mesh; both are recorded here and neither is treated as air quality evidence. Water: no source, treatment train, filtration specification, laboratory panel or pool and spa sanitation method is published. The spa is published by floor area, 27,000 square feet, and its hydrotherapy pool is described as the largest in Latin America. Neither is a chemistry or sanitation disclosure. A first look review published in May 2025 records complimentary bottled water in the suite without naming a source or treatment. Light: glazing and deep roof overhangs are described, but no colour temperature, tunable or circadian specification, flicker performance, blackout provision or exterior lighting discipline is published. Lighting appears in the published record only as a category of furnishing produced regionally. EMF: nothing is published on network topology, cabling, access point or smart meter placement, shielding, or field measurement in sleeping areas. Complimentary Wi-Fi is listed as an amenity, which is neither a disclosure nor evidence of its absence. Materials: named woods, stone and tile are published, and the robes are described as cotton and waffle weave. No fibre content is given for the bed linens, and no emission standard, volatile organic compound limit, adhesive, sealant, paint, mattress composition, flame retardant status, textile certification, thread count, or cleaning and laundry chemistry is published for either. Two different figures, 70 per cent and 80 per cent, are published for excavated material reused in construction, with wood headboards and siding named as end uses. Neither figure is an emission, finish or treatment specification, so neither is scored. Food: an on-site garden is published as a cocktail ingredient source, with no named farm or supplier, no share of produce, no cookware or cooking oil policy, and no specification for kitchen or ice water. Sound: no measured background noise level, acoustic separation specification or plant noise figure is published. The published references to sound are experiential, an underwater soundscape in the spa pool and music at the beach club. Nothing published at Marriott or Ritz-Carlton brand level was scored on this record.
Regional context2 public figures about the area, none of which scores
Public data about the surrounding area. None of it contributes to the score, because a property cannot be marked down for the conditions outside it.
- Safely managed drinking water, Costa Rica: The World Health Organization reports 81 per cent of the population nationally, 80 per cent in urban areas, 81 per cent in rural areas using a safely managed drinking water service. This describes the country, not this property, and says nothing about what reaches a guest room here. It is recorded because it is the background against which a property's own treatment is worth publishing. Source
- Ambient PM2.5 and PM10 near Peninsula Papagayo, Costa Rica: Modelled ambient air over this location averaged 5.9 micrograms per cubic metre of PM2.5 and 10.3 of PM10 across the 720 hours to 2026-08-17, peaking at 16.3 PM2.5. The World Health Organization annual guideline for PM2.5 is 5. This is the outdoor air over the area, modelled rather than measured on site, and it is not a reading of the air inside any room. Source
Verification recordwho checked this, how, and when
Verification record
- Method
- Desk research of published sources, each claim cited
- Reviewed by
- Certified Spaces Standards Inc.
- Last verified
- 2026-08-17
- Changes
- Every correction is logged
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
Questions travelers ask about Nekajui, a Ritz-Carlton Reserve
Does Nekajui, a Ritz-Carlton Reserve publish water quality testing?
No. Nothing is published, and we looked. That is a statement about the public record, not about safety.
What is the air quality like in the rooms?
We can only report what is published about the rooms themselves. It is claimed but not specified: the property asserts it without naming a system, supplier or measurement. Scored 1 of 3.
Is Nekajui, a Ritz-Carlton Reserve low-EMF?
No measurement is published. Only 14 of the 70 properties we have researched publish any bedroom EMF information at all, so this is the industry norm, not an outlier.
Is Nekajui, a Ritz-Carlton Reserve worth it?
We score evidence, not experience. On evidence, it ranks 51 of 70 researched records. The strongest documented pathways are Materials and Textiles and Biophilic and Healing Design; nothing is published on Water Integrity or EMF Harmony.