FOUND Hotel, San Francisco

Hotels
140 Mason St. , San Francisco , US

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Children allowed

Facilities

WiFi available
Free WiFi
Non-smoking rooms
Air conditioning
Restaurant
Business center
Family rooms
Lift / Elevator
Laundry
Bar
See all facilities

Review Highlights

Pros:
Friendly staff
Great location
Clean rooms
Cons:
Small rooms
Noise levels
Neighborhood concerns

Categories

Cleanliness
7.5
Some reviews noted cleanliness issues, such as hairs in the shower.
Service
9
Many reviews praised the staff for being friendly and helpful.
Location
8.5
Good location for access to the city and restaurants, although some found the neighborhood undesirable.
Room Quality
7
Rooms were described as tiny, with some dissatisfaction regarding the noise levels and the fit for larger bags.
Amenities
8
Standard amenities for a boutique hotel but missing some conveniences like a fridge.
Value for Money
8
Perceived as decent value for the price, despite some shortcomings.
Food and Beverage
8
Basic options available nearby as noted in the reviews.
Overall Experience
8
General consensus was a good experience with some noted issues.
* This sentiment is summarized by AI based on user reviews.
Updated at: 2026-01-08 15:44

Property Description

Central Location in San Francisco
Sonder at FOUND Union Square is conveniently situated in the heart of San Francisco, just steps away from Union Square and the Moscone Center. With easy access to transportation at the Powell Street BART and Muni station, exploring the city is a breeze.

Modern Amenities
Enjoy the convenience of free WiFi throughout the property at Sonder at FOUND Union Square. The 24-hour front desk and inviting common spaces ensure a comfortable stay. Additionally, take advantage of the on-site laundry facilities for added convenience during your visit.

Near Major Attractions
Explore iconic San Francisco landmarks such as City Hall and Coit Tower, located just a short distance from the hotel. With the San Francisco International Airport also within reach, Sonder at FOUND Union Square is the perfect choice for your stay in the city.

Experience convenience and comfort at Sonder at FOUND Union Square - Book your stay now!

Important information:

After confirmation, Sonder will reach out to guests through a secure link to gather some information regarding the guests stay. Sonder may require the guest to provide a photo of their government issued photo ID. Guests will receive check in details from property management three days prior to arrival. Please note, the layout, furniture, and decor of your space may vary from these photos. This is a central location and prone to city noise. License number is 1206719-12-181.This property does not accommodate bachelor(ette) or similar parties.
Guests are required to show a photo ID and credit card upon check-in. Please note that all Special Requests are subject to availability and additional charges may apply.
Guests under the age of 18 can only check in with a parent or official guardian.
A deposit may be required at the property.

Check-in and check-out hours:
Check-out: 11:00 AM

Location

Guest Reviews

Cleanliness: 7.5
Service: 9
Location: 8.5
Room Quality: 7
Amenities: 8
Value for Money: 8
Food and Beverage: 8
Overall Experience: 8
C
Corinne • couple • fr
9
Juste une nuit ,agréable
Pros:

Le design , les équipements

Cons:

Manque un peu d’insonorisation

2026-09-17 • via Nuitee
C
Cristiano • solo_traveller • it
10
2026-09-17 • via Nuitee
V
vivian • solo_traveller • pa
8
2026-09-15 • via Nuitee
B
Brigitte • solo_traveller • at
7
Pros:

Die Lage des Hotels ist sehr gut, man ist nur wenige Minuten auf der Market Street wo sich ein gutes Verkehrsnetz befindet.

Cons:

Wenn man das Fenster beim Schlafen geöffnet haben möchte, muss man damit rechnen dass es bis ca Mitternacht sehr laut ist

2026-09-15 • via Nuitee
P
Pedro • couple • pt
8
Pros:

Localização central, bom para explorar o cnetro da cidade. Água, Cafés e bebidas quentes gratuitas disponíveis na lounge, tal como máquina de lavar. Quarto pequeno mas funcional, sem TV.

Cons:

Localização perto de um bairro problemático (Tenderloin), mas mesmo assim tranquilo

2026-09-14 • via Nuitee
J
Jo-Hsien • solo_traveller • us
7
2026-09-11 • via Nuitee
E
Edward • couple • gb
8
2026-09-11 • via Nuitee
G
Giacomo • solo_traveller • it
8
Per il prezzo va benissimo
Pros:

Posizione molto buona, oggettivamente mai sentito insicuro anche se in una zona non bellissima (una via poco più avanti é decisamente degradata), macchina del caffè nella sala ristoro comune con bevande gratuite, bagno moderno con dispenser di bagnoschiuma e shampoo apparentemente di qualità molto buona, letti comodi (eravamo un una camera con un letto a castello).

Cons:

La camera dove abbiamo alloggiato ha una finestra che dà sulla balaustra interna, manca quindi aria fresca e l’odore di chimico (forse prodotti per pulire) ci ha perseguitato per 3 giorni.
Le dimensioni molto ridotte, perfetta giusto per dormire e farsi una doccia.

2026-09-09 • via Nuitee
Y
Yollanda • solo_traveller • us
10
Cleanliness, comfort and convenience for an affordable price.
Pros:

Great location (2 min walking from the Powell Station), clean and comfortable rooms and shared facilities, attentive and helpful staff. Kitchen with water, ice and different kinds of coffee available for free.

Cons:

The only issue was that not all outlets were working in the room. Apart from that, everything else was perfect!

2026-09-09 • via Nuitee
E
Elsa • extended_group • us
9
2026-09-08 • via Nuitee
Z
Zdravko • solo_traveller • hr
6
2026-09-07 • via Nuitee
A
Anna • family_with_children • ca
1
The price is not worth having bed bug marks for!!
Pros:

I liked that there was complimentary coffee machine

Cons:

The water dispenser was always empty, two of us out of 4 people ended up having BED BUG BITES!!! The carpet was disgusting with old gum and stains everywhere. They had a poster in the elevator indicating you can ask for slippers (subject to availability) and of course there was no slippers when I requested. Outside the building were dangerous people at night in that part of downtown so now I know!!

2026-09-07 • via Nuitee
T
Takuya • couple • jp
10
2026-09-07 • via Nuitee
Y
Yulian • couple • au
8
2026-09-05 • via Nuitee
R
Risvig • extended_group • dk
5
Pros:

Det var centralt

Cons:

Værelset småt og mørkt og dyrt i forhold til de andre steder vi har boet

2026-09-04 • via Nuitee
S
Shenna • family_with_children • ph
10
Pros:

the common kitchen with unli coffee

2026-09-03 • via Nuitee
L
Lory • extended_group • it
8
2026-09-02 • via Nuitee
S
Serena • couple • it
9
2026-09-02 • via Nuitee
S
Sabrina • couple • us
8
2026-09-01 • via Nuitee
K
Kevin • couple • us
10
2026-09-01 • via Nuitee