Nekajui, a Ritz-Carlton Reserve is a stay in Peninsula Papagayo, Costa Rica. This page records what the property publishes about its building, across the eight pathways this index reviews.
Photography: Nekajui, a Ritz-Carlton Reserve
The recordSpecified · read 17 Aug 2026
Current as of
17 Aug 2026
Last reviewed
17 Aug 2026
Coverage
Documented across 8 of 8 pathways.
Strongest evidence
Specified
Sources
Each entry shows its source and the date we read it.
Practical details
Type
Stay
Operator
Marriott / Ritz-Carlton Reserve
Rooms
107 rooms and suites, including three treetop tents
Stage
Operating
Listing details from Google Places, read 6 Aug 2026.
A Ritz-Carlton Reserve of 107 rooms and suites, including three treetop tents, on Peninsula Papagayo in Costa Rica.
A closer look at Nekajui, a Ritz-Carlton Reserve
A Ritz-Carlton Reserve of 107 rooms and suites, including three treetop tents, on Peninsula Papagayo in Costa Rica. Before building, the design architect 10 Design and the landscape architect EDSA surveyed every tree and mapped them against animal habitats and views, and the stone walls were built from material taken from the site. The record is strongest on Biophilic and Healing Design, Air Ecology and Materials and Textiles. Nothing is published on Water Integrity, EMF Harmony or Sound and Sensory Ecology.
The spaceRooms and suites use custom teak casework, local Arbol de Guanacaste wood, Fusion Quartzite stone and…
Rooms and suites use custom teak casework, local Arbol de Guanacaste wood, Fusion Quartzite stone and handmade Marazzi tiles, with bed linens and robes by Frette. Every room has floor to ceiling sliding glass. The three treetop tents, by Luxury Frontiers, are canvas with roll up mesh openings, set on piles along the natural contours above the forest floor. The chapel holds 650,000 hand laid tiles by Costa Rican artisans.
What this property publishes, area by area
All eight areas, for every record. Each row opens to what was published, where we read it and when.
Publishing something is not the same as it being good. Every line below was read and placed by a person, not scored by a machine. What each rung means
Named means the property published something you can look up: a brand, a product or a number. Stated means it says so with nothing behind it. Not published means we looked and found nothing, which is a gap in our reading and not an answer about the building.
Air Ecology3 source notesPublished or supplied
The air in a closed room is what you breathe for eight hours. What decides it is the filter grade, the fresh air rate, and whether damp has ever been looked for.
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.
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.
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
What to ask them
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 IntegrityNo evidence recordedNothing found yet
You drink it, cook with it and stand under it. What is in it depends on the source and on what, if anything, filters it, and both are things a property can name.
We found nothing published on this. That is a gap in what we could read, not a finding about the building.
What to ask them
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 Rhythm1 source notePublished or supplied
Light is what tells a body the time of day. The part a building controls is what its fittings emit and when, which a named product or a colour temperature makes checkable.
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.
What to ask them
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 HarmonyNo evidence recordedNothing found yet
Wiring, routers and devices put electromagnetic fields in a room. What a building decides is where they sit relative to the bed, and whether anyone has measured it.
We found nothing published on this. That is a gap in what we could read, not a finding about the building.
What to ask them
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 Textiles2 source notesPublished or supplied
The things you sleep on and touch: the mattress, the sheets, the pillows, and the paints, glues and finishes around them. A named fabric, a fibre content or a certification can be looked up. A structural palette tells you about the building, not about the bed.
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.
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.
Published by Sebastian Luxe Travel, read 17 Aug 2026.
The bed linens are Frette, which already tells you a lot about the priorities here.
What to ask them
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 Kitchen1 source notePublished or supplied
What a kitchen cooks with and where it buys are the parts of a stay you take inside you. A named oil, a named supplier or a published share is checkable; “healthy” is not.
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.
Published by Marriott International, read 17 Aug 2026.
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.
What to ask them
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 Design4 source notesPublished or supplied
Daylight, planting, outlook and the way a room meets the outside are what make a place feel the way it does. Named design decisions can be checked; atmosphere cannot.
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.
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.
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
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.
What to ask them
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 EcologyNo evidence recordedNothing found yet
What you can hear at three in the morning decides whether you slept. Insulation, plant and machinery, and what sits next door are what decide it.
We found nothing published on this. That is a gap in what we could read, not a finding about the building.
What to ask them
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?
Not everything is published, and an empty row is a gap in what we could read rather than a fault in the building. If one of these matters to you, ask the property before you book. Send us something that updates this record
Feature sources and certification records show their own scope and dates.
Compare what each stay offers, how it was checked and what still needs confirming. Assessment labels describe the review, not an overall quality rating.
A low score means a property has not published information. It does not mean the property is unsafe, unhealthy or poorly run.
These scores describe disclosure, not property quality. Listings are free, and any commercial relationship is disclosed.
Regional data is context about the location. It does not establish conditions inside a room.
Safely managed drinking water, Costa Rica · 2024The 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.World Health Organization
Ambient PM2.5 and PM10 near Peninsula Papagayo, Costa Rica · 30 days to 2026-08-17Modelled 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.Open-Meteo, from CAMS
