Four Seasons Hotel Los Angeles at Beverly Hills
The evidence
Each criterion with what we found, where we found it and when. Anything we could not confirm says so.
NTH criteria
NTH Framework v1.2. Score 63.5 (raw 48.0 of 100), calibrated so the best hotel in this edition (Santa Monica Proper Hotel) reads 90. Evidence retrieved 2026-10-22.
Sleep5.0 / 24
The room as an instrument for deep, uninterrupted, circadian-aligned rest.
Mattress & sleep system
Not yet reviewed · in the best room
Unknown. We have asked the hotel.
0.0 / 5 pts
Unknown
Bedding & textiles
Hotel-reported · in the best room
Hypoallergenic bedding on request.
Sleep programme & pillow menu
Hotel-reported · in the best room
Orthopedic pillows on request.
Blackout
Not yet reviewed · in the best room
Unknown. We have asked the hotel.
0.0 / 2 pts
Unknown
Circadian & warm evening lighting
Hotel-reported · in the best room
Energising light to help regulate circadian rhythm (Wellness Rooms and Suites).
In-room red light
Not yet reviewed · in the best room
Unknown. We have asked the hotel.
0.0 / 2 pts
Unknown
Acoustic quiet
Hotel-reported · in the best room
Sound machines / soundscape in wellness rooms.
EMF & Wi-Fi-off options
Not yet reviewed · in the best room
Unknown. We have asked the hotel.
0.0 / 2 pts
Unknown
Air9.0 / 12
What you breathe for eight hours a night: filtered, fresh, smoke-free and unperfumed.
In-room purification
Hotel-reported · in the best room
Air purification system (Wellness Rooms and Suites); Rabbit Air in the Well Office.
Ventilation & building standard
Hotel-reported · across the property
Fourth floor transformed after multiple Delos Living installations.
Smoke-free policy
Not yet reviewed · across the property
Unknown. We have asked the hotel.
0.0 / 2 pts
Unknown
Fragrance-free & low-allergen rooms
Hotel-reported · in the best room
Hypoallergenic wood floors 'for an allergy-friendly environment'.
Water10.0 / 12
Clean water to drink, and to shower and bathe in.
Filtered drinking water
Hotel-reported · in the best room
Water purification system in the room.
Shower & bath filtration
Hotel-reported · in the best room
Water dechlorinator in the room (published alongside the purification system).
Gentler pool & hydrotherapy water
Not yet reviewed · across the property
Unknown. We have asked the hotel.
0.0 / 2 pts
Unknown
Nourishment3.0 / 10
Food and drink that heal rather than merely please.
Organic & local sourcing
Not yet reviewed · across the property
Unknown. We have asked the hotel.
0.0 / 4 pts
Unknown
Clean-ingredient standard
Hotel-reported · across the property
Vegan, vegetarian and gluten-free choices.
Clean minibar & in-room hydration
Hotel-reported · in the best room
Wellness private bar.
Nutrition guidance
Not yet reviewed · across the property
Unknown. We have asked the hotel.
0.0 / 1 pts
Unknown
Movement6.0 / 10
The means to train, stretch and move, indoors and out.
Gym completeness
Hotel-reported · across the property
24-hour open-air Fitness Centre; equipment brands not listed.
Classes & studios
Hotel-reported · across the property
Private helipad yoga; Alo in-room yoga equipment.
Swimming
Hotel-reported · across the property
Outdoor rooftop pool.
Outdoor activity
Hotel-reported · across the property
Outdoor rooftop helipad yoga session.
Holistic Wellness10.0 / 19
Healing traditions and the recovery technology that complements them.
Spa facility
Hotel-reported · across the property
3,695 sq ft spa, eight treatment rooms, sauna and aromatherapy steam room.
Traditional & integrative modalities
Hotel-reported · across the property
Acupuncture and lymphatic massage (Immortelle).
Mind & breath
Hotel-reported · across the property
Sound bath, sound meditation, guided meditation.
Heat therapy
Hotel-reported · across the property
Sauna and steam.
Cold therapy
Not yet reviewed · across the property
Unknown. We have asked the hotel.
0.0 / 2 pts
Unknown
Photobiomodulation & PEMF
Not yet reviewed · across the property
Unknown. We have asked the hotel.
0.0 / 2 pts
Unknown
Clinical longevity (IV, HBOT, diagnostics)
Hotel-reported · across the property
Wellness infusions and IVs via Immortelle at the hotel.
Materials & Setting5.0 / 13
What touches the skin and surrounds the stay: finishes, products, cleaning, and the landscape beyond the door.
Natural, low-VOC finishes
Hotel-reported · in the best room
Hypoallergenic wood floors 'for an allergy-friendly environment'.
Clean bath & body amenities
Hotel-reported · in the best room
Byredo bath amenities.
Non-toxic spa & nail products
Not yet reviewed · across the property
Unknown. We have asked the hotel.
0.0 / 2 pts
Unknown
Non-toxic housekeeping & plastic-free operations
Not yet reviewed · across the property
Unknown. We have asked the hotel.
0.0 / 2 pts
Unknown
Green & blue space
Hotel-reported · across the property
Tropically landscaped fourth-floor terrace.
Walkability & low-impact mobility
Not yet reviewed · across the property
Unknown. We have asked the hotel.
0.0 / 2 pts
Unknown
Our review
At a glance
- Fragrance
- 1 not met, 4 not yet reviewed
- Air
- 1 hotel-reported, 4 not yet reviewed
- Cleaning & care
- 4 not yet reviewed
- Sleep & materials
- 1 hotel-reported, 4 not yet reviewed
- Water & pools
- 1 hotel-reported, 3 not yet reviewed
- Food
- 2 not yet reviewed
- Light & quiet
- 2 not yet reviewed
- Building
- 3 not yet reviewed
Two reported by the hotel; one not met; the rest not yet reviewed.
2 hotel-reported1 not met22 of 25 not yet reviewed
Counts cover the 25 scored criteria; the other 5 windows are context.
Checked
Read the full profileThe ledger
Fragrance
Added scent is the most common complaint from sensitive guests, and the hardest thing to see on a booking page.
No added fragrance in rooms
Not yet reviewed.
No scent marketing
Not yet reviewed.
Fragrance-free laundry
Not yet reviewed.
Unscented bath products
Not yet reviewed.
So far, the hotel says: Rooms have ‘Byredo bath amenities’.
Our note. Whether an unscented option is offered is not stated.
How we know
What we look for. Fragrance-free toiletries in the room by default, or on request.
Why it matters. Fragrance ingredients are among the most frequent causes of allergic contact reactions to cosmetics. An unscented option lets sensitive guests use what is provided instead of packing their own.
Source: EU Scientific Committee on Consumer Safety, Opinion on fragrance allergens in cosmetic products ()
Source 1: Hotel website: Wellness RoomUndated · read 22 Oct 2026
Unscented spa options
Not metin some rooms or areas
The hotel says: The spa ‘offers a sauna, an aromatherapy steam room and private poolside cabana treatments’.
Our note. The sauna is not described as scented. Ask whether any treatment can be done without essential oils.
How we know
What we look for. Treatments, saunas and steam rooms available without essential oils or scent infusions.
Why it matters. Essential oils are fragrance: the EU’s scientific committee lists several natural extracts, as well as single fragrance chemicals, among established contact allergens. A shared sauna with a scent infusion is hard to avoid.
Source: EU Scientific Committee on Consumer Safety, Opinion on fragrance allergens in cosmetic products ()
Source 2: Hotel website: spaUndated · read 22 Oct 2026
Know something about fragrance here that we don’t? Tell us
Air
What you breathe for eight hours a night: smoke history, fresh air, filtration and anything burning in the room.
Smoke-free property
Not yet reviewed.
Opening windows
Hotel-reportedacross the property
The hotel says: ‘Each room features a private step-out balcony.’
How we know
What we look for. Guest rooms have windows or doors that open to outside air.
Why it matters. The US EPA lists opening windows, when outdoor air allows, as a way to dilute pollutants released indoors. An opening window lets guests air a room themselves when it smells of cleaning products or new furnishings.
Source: US EPA, Improving indoor air quality ()
Source 3: Hotel website: accommodationsUndated · read 22 Oct 2026
Filtered fresh air
Not yet reviewed.
In-room air purifier
Not yet reviewed.
So far, the hotel says: Wellness Rooms and Suites have an ‘air purification system’; the Wellness Floor page names ‘Rabbit air purification systems’.
Our note. Whether the units run as true HEPA with any ionizer switched off is not stated, so this falls short of the criterion. Standard rooms are not described.
How we know
What we look for. A true-HEPA purifier in the room or on request, with no ozone-generating or ionizing function.
Why it matters. Portable HEPA units lower indoor particle levels, which matters most during wildfire smoke. Ionizers and ozone purifiers can add an irritant gas instead.
Sources: US EPA, Guide to air cleaners in the home (undated); US EPA, Ozone generators that are sold as air cleaners ()
Source 1: Hotel website: Wellness RoomUndated · read 22 Oct 2026
No in-room combustion
Not yet reviewed.
Know something about air here that we don’t? Tell us
Cleaning & care
How a room is cleaned, treated and prepared, and whether a request for a gentler clean is actually honored.
Low-chemical housekeeping
Not yet reviewed.
No ozone or biocide treatments
Not yet reviewed.
Low-chemical pest control
Not yet reviewed.
Sensitive-guest preparation
Not yet reviewed.
Know something about cleaning & care here that we don’t? Tell us
Sleep & materials
The textiles, mattress and floor you spend the night closest to, and how allergen-aware the room is.
Tested or organic bed linen
Not yet reviewed.
Mattress materials disclosed
Not yet reviewed.
Hard floors
Hotel-reportedonly some rooms or areas
The hotel says: Wellness Rooms and Suites have ‘hypoallergenic wood floors for an allergy-friendly environment’.
Our note. Standard rooms are not described.
How we know
What we look for. Hard, cleanable floors in guest rooms rather than wall-to-wall carpet.
Why it matters. Dust mites live in carpet, and US health guidance for allergic sleepers is to replace wall-to-wall carpet in bedrooms with bare floors, which can be cleaned completely between guests.
Source: US National Institute of Environmental Health Sciences, Dust mites and cockroaches (undated)
Source 1: Hotel website: Wellness RoomUndated · read 22 Oct 2026
Allergy-friendly rooms
Not yet reviewed.
So far, the hotel says: Bedding is ‘down duvets’ and ‘down pillows’, with ‘hypoallergenic bedding and orthopedic pillows upon request’.
Our note. Barrier covers and hot-washable bedding are not mentioned.
How we know
What we look for. Allergen-barrier mattress and pillow covers and feather-free, hot-washable bedding, in all or designated rooms.
Why it matters. For dust-mite allergy, US health guidance is to encase mattresses and pillows in allergen-proof covers and wash bedding weekly in hot water (130–140 °F, about 55–60 °C).
Source: US National Institute of Environmental Health Sciences, Dust mites and cockroaches (undated)
Source 1: Hotel website: Wellness RoomUndated · read 22 Oct 2026
Pet-free rooms
Not yet reviewed.
So far, the hotel says: ‘Pets are welcomed with warm California hospitality and thoughtful amenities.’
Our note. Whether any rooms are kept pet-free is not stated.
How we know
What we look for. Rooms or floors where animals are never allowed, cleaned to a separate routine.
Why it matters. Pet allergen can stay on carpets and furniture for months and travels on clothing. For allergic guests a room animals never enter matters more than any amenity.
Source: US National Institute of Environmental Health Sciences, Pet allergens (undated)
Source 4: Hotel website: services and amenitiesUndated · read 22 Oct 2026
Know something about sleep & materials here that we don’t? Tell us
Water & pools
Drinking water, shower water and pool air.
Filtered or tested drinking water
Not yet reviewed.
So far, the hotel says: Wellness Rooms and Suites have a ‘water dechlorinator and water purification system’.
Our note. What the system removes, and how often filters are changed or the water tested, is not stated. Standard rooms are not described.
How we know
What we look for. Drinking water filtered at the tap or refill station, or treated and tested on site, with filters or tests on a schedule.
Why it matters. Public water systems in California are regulated and monitored by the State Water Board, though older building plumbing can still affect what reaches the tap. Filtration mainly improves taste and removes chlorine, and it replaces single-use bottles; private wells need regular testing.
Source: California State Water Resources Control Board, Division of Drinking Water (undated)
Source 1: Hotel website: Wellness RoomUndated · read 22 Oct 2026
Water safety plan
Not yet reviewed.
Shower filters
Not yet reviewed.
So far, the hotel says: Wellness Rooms and Suites have a ‘water dechlorinator and water purification system’.
Our note. The page does not say whether this covers the shower.
Shown for information; not scored.
How we know
What we look for. Shower filters that reduce chlorine or chloramine, in rooms or on request.
Why it matters. Some guests with sensitive skin prefer less chlorine in shower water. The health evidence is limited, so we list this as a comfort feature.
Source 1: Hotel website: Wellness RoomUndated · read 22 Oct 2026
Comfort feature, not scored.
Outdoor or low-chloramine pools
Hotel-reportedacross the property
The hotel says: There is an outdoor pool, ‘a tranquil, palm-lined haven’ on the fourth-floor terrace.
Our note. The water treatment is not described.
Shown for information; not scored.
How we know
What we look for. Pools are outdoors, or indoor pools have dedicated ventilation and monitored combined chlorine.
Why it matters. Chloramines irritate the skin, eyes and airways, and they build up in the air of indoor pools without enough ventilation. Outdoor pools, and good ventilation for indoor ones, keep levels low.
Source: US CDC, Chloramines and pool operation ()
Source 4: Hotel website: services and amenitiesUndated · read 22 Oct 2026
Context, not scored: almost every pool in this catalog is outdoors, so it says little about one hotel against another.
Know something about water & pools here that we don’t? Tell us
Food
Allergen care first; where the produce comes from second.
Allergen-aware kitchen
Not yet reviewed.
Garden or organic produce
Not yet reviewed.
Shown for information; not scored.
Know something about food here that we don’t? Tell us
Light & quiet
Darkness and silence at night, and radio-quiet options for guests who want them.
Darkness and quiet
Not yet reviewed.
Radio-quiet options
Not yet reviewed.
Shown for information; not scored.
Know something about light & quiet here that we don’t? Tell us
Building
The materials a hotel was built and renovated with, how it handles damp, and what third parties have certified.
Low-emitting materials
Not yet reviewed.
So far, the hotel says: Wellness Rooms and Suites have ‘hypoallergenic wood floors’.
Our note. Paints, adhesives and finishes are not described.
How we know
What we look for. Low-VOC paints, adhesives, finishes and flooring specified in construction or renovation.
Why it matters. Paints, varnishes and adhesives release volatile organic compounds, formaldehyde among them, most heavily when new. Low-emitting products reduce that load.
Source: US EPA, Volatile organic compounds’ impact on indoor air quality ()
Source 1: Hotel website: Wellness RoomUndated · read 22 Oct 2026
Leak and mold response
Not yet reviewed.
Building certification
Not yet reviewed.
So far, the hotel says: The hotel turned its fourth floor into a wellness floor ‘after successfully partnering with Delos Living on multiple installations’.
Our note. A partnership with Delos is not a building certification, and none is stated.
Shown for information; not scored.
How we know
What we look for. A third-party certification such as WELL, LEED or a green business program, recorded with its level, and its year where the certifier gives one.
Why it matters. WELL assesses air, water and light in occupied buildings. LEED and green business programs are mainly environmental, with some indoor-quality elements. A certificate records what was designed or checked at a point in time, not what a room is like today.
Source 5: Hotel website: Wellness FloorUndated · read 22 Oct 2026
Context only. A certificate supports specific criteria only where its scope covers them.
Know something about building here that we don’t? Tell us
Notes & sources
- Hotel website: Wellness Room, Undated · read 22 Oct 2026
- Hotel website: spa, Undated · read 22 Oct 2026
- Hotel website: accommodations, Undated · read 22 Oct 2026
- Hotel website: services and amenities, Undated · read 22 Oct 2026
- Hotel website: Wellness Floor, Undated · read 22 Oct 2026
- Hotel website: in-room wellness menu, Undated · read 22 Oct 2026
Room count: Per the hotel’s website: 185 guest rooms and 100 suites. Hotel website (opens the hotel’s website)
Photographs: Four Seasons Hotel Los Angeles at Beverly Hills; Four Seasons Hotel Los Angeles at Beverly Hills; Four Seasons Hotel Los Angeles at Beverly Hills; Four Seasons Hotel Los Angeles at Beverly Hills; Four Seasons Hotel Los Angeles at Beverly Hills
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