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
G
Giovanna • extended_group • it
10
Pros:

Posizione molto centrale.
I servizi che offre la struttura sono decisamente un plus da non sottovalutare.
C’è una cucina in comune con tutto il necessario a disposizione e inoltre una macchina che eroga bevande calde a disposizione degli ospiti e posso garantire
Che con i prezzi di San Francisco è una cosa super positiva e una coccola piacevole per l
Ospite.
Ad ogni rientro in struttura infatti io e i miei compagni di viaggio ci riunivamo nella zona in comune a bere cioccolata calda e cappuccino .

Cons:

Dimensione della camera molto piccola

2026-08-29 • via Nuitee
M
Megan • extended_group • gb
6
2026-08-29 • via Nuitee
A
Amelia • solo_traveller • gb
9
Pros:

I liked that the doors at the reception locked which made me feel a lot more safe especially being a solo traveller, and the communal area was really nice

2026-08-28 • via Nuitee
E
enrique • family_with_children • es
8
Pros:

Todo

2026-08-27 • via Nuitee
S
Sophie • solo_traveller • au
9
2026-08-27 • via Nuitee
T
Thomas • extended_group • it
9
Nice hotel with kind staff for a fair price
Pros:

Nice hotel, quite modern / new, with a good location and very kind staff

Cons:

The room was on the smaller side, but fair for the price

2026-08-26 • via Nuitee
R
ROSARIA • solo_traveller • it
8
2026-08-26 • via Nuitee
S
Sandra • family_with_children • ch
9
Great place to stay for a few days when you need a place to sleep but dont spend free time in the ro
Pros:

while the room was rather small it was very well equipment in terms of electricity plugs and the bathroom, with a lavabo inside the room. it is ideal for a family where not much privacy is needed. It was great that we could put the surfboard bag into a separate storage room on the ground floor.

Cons:

Overall, all went well.

2026-08-24 • via Nuitee
A
Alberto • extended_group • it
9
Pros:

Ottima posizione centrale

2026-08-24 • via Nuitee
B
Bán • couple • hu
7
2026-08-23 • via Nuitee
M
Maria • solo_traveller • ie
10
2026-08-23 • via Nuitee
K
Kazuki • extended_group • jp
8
よかった
Pros:

駅から近かった

Cons:

近くの部屋の水回りの音がうるさくて、寝ている間に少し気になってしまった

2026-08-23 • via Nuitee
M
Marie • couple • fr
4
Trop cher pour le peu de qualité
Pros:

À côté des transports en commun

Cons:

Chambre peu isolée donc on a eu froid la nuit et la climatisation en mode chaud ne marchait pas !
Très bruyant, on entend les voisins parler et marcher
Moquette au sol avec odeur nauséabonde d’urine !
Pas de frigo, pas d’équipements
Porte de douche non étanche donc eau partout
Quartier qui craint donc SDF et drogués partout
Fait penser à une auberge de jeunesse plus qu’un hôtel

2026-08-20 • via Nuitee
K
Kari-Annette Arnestad • solo_traveller • no
8
Great hotel!
Pros:

Good beds, great location

Cons:

-

2026-08-19 • via Nuitee
素莉莊 • solo_traveller • tw
9
Pros:

地點方便，到車站及鄰近百貨公司等都很方便，房間空間適中，附有洗衣機，雖然不附早餐，附近採購方便。

2026-08-19 • via Nuitee
D
Dennis • solo_traveller • it
6
Pros:

Beds were comfortable. The lounge and kitchenette are useful.

Cons:

Most rooms smell quite bad of sewage. Airing them helps, but it builds up. The rooms are tiny, and there are some that are even smaller.

2026-08-19 • via Nuitee
Y
Yarin • solo_traveller • il
7
Value for money but not the best location
Pros:

It was clean and fitted for solo travelers!

Cons:

The location is not welcoming and not friendly to say the least. With that being said, It is a nice location for public transportation. Additionally, the room is very minimalistic and did not have a vault for example.

2026-08-19 • via Nuitee
S
Susana • extended_group • us
10
Quiet, excellent customer service, only bad the coffee machine was broken 🥲
Pros:

Closer to union square

Cons:

The beds

2026-08-18 • via Nuitee
H
Hannah • extended_group • us
10
2026-08-18 • via Nuitee
Y
Ya Yun • extended_group • tw
8
2026-08-16 • via Nuitee