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Found Union Square powered by Sonder

Hotel

140 Mason St.

10 nights, 2 adults

USD$1,588

Includes taxes and charges

10 nights, 2 adults

USD$1,588

Includes taxes and charges

See Rooms & Prices
hotel
hotel

Why people book this hotel

Great location
13 mentions

Good location to Bart and Muni

Location is excellent

Friendly staff
9 mentions

Staff were very friendly and accomodating

Stuffs are helpful and talkative, welling to provide information

Clean rooms
6 mentions

Super clean

Great location, good value, lovely staff, clean, modern and quite cool

Comfortable rooms
5 mentions

Bathroom had adequate towels

It has small but well designed rooms great for one person or a couple and a nice…

Good value
2 mentions

I arrived during a power cut in downtown, staff handled well, good value, and cl…

Breakfast available
2 mentions

The small guest kitchen was very useful for breakfast

No breakfast but a close restaurant open at 6

Overview

Located in the heart of San Francisco, Sonder at FOUND Union Square is 400 metres from Union square and 800 metres from Moscone Center. It is a 5 minutes’ walk from San Francisco’s Powell Street BART and Muni station. Sonder at FOUND Union Square features free WiFi throughout the property. There is a 24-hour front desk at the property along with common spaces. There is also on-site laundry available for an additional fee. San Francisco City Hall is 1 km from Sonder at FOUND Union Square, while Coit Tower is 2 km from the property. The nearest airport is San Francisco International Airport, 23 km from the property.

Traveller reviews

P

Philip

solo_traveller

June 1, 2026

8

Recommend this hotel.

Super clean. Bathroom had adequate towels. The lady at reception was excellent. Having a laundry really helps. TV was a challenge but got there in the end. Good location to Bart and Muni. Staying again on the return trip home.

B

Badr

solo_traveller

June 1, 2026

7

Welcoming but the smell is a problem

The kindness of Alafa (I might write it wrongly, she is American Persian) she was so kind and did everything she can to solve the issues I faced at the hotel. Her kindness compensated every single problem. Thank you.

V

Vera Elvira

solo_traveller

May 24, 2026

8

Good location, comfortable stay.

Staff were very friendly and accomodating. Location is excellent.

J

Julija

solo_traveller

May 23, 2026

8

Great cozy stay in central San Francisco

There were a lot of negative reviews about the property conditions, it was not the newest, but it is well kept, cozy, I literally felt like home in there.

R

Romana

solo_traveller

April 22, 2026

10

Great hotel for solo travelers and business people

The hotel is located in an area that allows easy commute to all major attractions and conference venues as well as simple public transit commute from and to SFO Airport. It has small but well designed rooms great for one person or a couple and a nice communal area with a kitchen, lounge, and laundry on the second floor. Also there are a couple of great restaurants next door you can go to for lunch or dinner.

S

SiLVEN

solo_traveller

March 15, 2026

7

Public kitchen is good. Plenty disposable tableware and supplements can be used.

C

ChingYan

extended_group

February 20, 2026

8

Stuffs are helpful and talkative, welling to provide information.

N

Nicholas

solo_traveller

February 9, 2026

7

Winning hotel but for the street noise

Great location, good value, lovely staff, clean, modern and quite cool.

E

Erwann

extended_group

February 7, 2026

10

Amazing!

The staff is very friendly and helpfull. The beds are clean and confortable. Coffee/chocolate machine and the kitchen are optimal!

R

Ross

couple

February 2, 2026

8

I liked the shared lounge and hydration station area. As well as the staff

G

George

couple

January 24, 2026

8

Great budget hotel

Convenient location, clean and nice facilities

C

Claudia

extended_group

January 21, 2026

5

Functional

The bed was extremely comfortable and our room was very quiet (we got an inside one), which made for a great night sleep. The shared spaces were really nice, as was the location. We could walk to many places.

F

Firouzeh

extended_group

January 20, 2026

7

It was two nights, and for the money was good. Bed was comfortable and no noise

There was no closet to hang clothes, and there were only hangers inside bathrooms, next to bathroom door. Made it difficult to enter and not hit the hangers.and no place to hold hand towels by the sink in the room. There was drawer in the room if you can fold your clothes.

J

Jacqueline aparecida

family_with_children

January 19, 2026

7

The hotel is very centrally located, close to the subway and BART station. The small guest kitchen was very useful for breakfast. The washing machine and dryer were very useful. The locker for leaving our bags before and after the flight was a great help. We requested early check-in, but it wasn't possible.

H

He

solo_traveller

January 16, 2026

9

To repeat again

No breakfast but a close restaurant open at 6.00 AM. So fabulous and friendly. Common room for coffee, kitchen : very good idea Close to Chinatown and Fishermen warfs. Located in Downtown : so, the top.

D

Daisy

couple

January 2, 2026

8

Good value

I arrived during a power cut in downtown, staff handled well, good value, and clean

S

Guest

extended_group

December 23, 2025

7

It was two nights, and for the money was good. Bed was comfortable and no noise

There was no closet to hang clothes, and there were only hangers inside bathrooms, next to bathroom door. Made it difficult to enter and not hit the hangers.and no place to hold hand towels by the sink in the room. There was drawer in the room if you can fold your clothes.

J

Janis

couple

December 19, 2025

5

Don’t ruin your trip to save a bit of money!

Location!

P

Paulo Cesar

solo_traveller

December 14, 2025

4

Great location and staff, but room condition and noise issues affected the stay.

Overall, the staff were very friendly and helpful, and the hotel’s location was great: close to cafés, restaurants, bars, and public transport.

M

Man Wai

couple

December 10, 2025

8

Nice stay in this hotel, if I will be back in SF, will definitely choose here.

Good location (next to cable car), clean, nice staff. Also can have free coffee in the morning before go out.

Facilities

Cleanliness & disinfecting

Use of cleaning chemicals that are effective against Coronavirus, Linens, towels and laundry washed in accordance with local authority guidelines, Guest accommodation is disinfected between stays, Guest accommodation sealed after cleaning, Property is cleaned by professional cleaning companies, Guests have the option to cancel any cleaning services for their accommodation during their stay

Food & drink safety

All plates, cutlery, glasses and other tableware have been sanitized, Physical distancing in dining areas

General

Non-smoking rooms, Lift, Non-smoking throughout, Air conditioning

Internet

Internet services, WiFi, Free WiFi

Physical distancing

Contactless check-in/check-out, Cashless payment available, Physical distancing rules followed, Screens or physical barriers placed between staff and guests in appropriate areas

Reception services

Invoice provided

Safety features

Staff follow all safety protocols as directed by local authorities, Shared stationery such as printed menus, magazines, pens, and paper removed, Hand sanitizer in guest accommodation and key areas

Services

Laundry

King Room

The double room features air conditioning, a wardrobe, as well as a private bathroom boasting a bath or a shower and a hairdryer. The unit has 1 bed.

Max 2 guests 17 1 bedroom 1 bathroom
Queen Room

The double room features air conditioning, a wardrobe, as well as a private bathroom boasting a bath or a shower and a hairdryer. Rooms on the upper floors are reachable by lift. The unit has 1 bed.

Max 2 guests 10 1 bedroom 1 bathroom
Queen Room

The double room provides air conditioning, a wardrobe, as well as a private bathroom featuring a bath or a shower and a hairdryer. Rooms on the upper floors are reachable by lift. The unit offers 1 bed.

Max 2 guests 10 1 bedroom 1 bathroom
Standard Double Room

The double room offers air conditioning, a wardrobe, as well as a private bathroom boasting a bath or a shower and a hairdryer. Rooms on the upper floors are reachable by lift. The unit has 2 beds.

Max 2 guests 10 1 bedroom 1 bathroom
Superior Twin Room

The twin room offers air conditioning, a wardrobe, as well as a private bathroom boasting a bath or a shower and a hairdryer. The unit has 2 beds.

Max 2 guests 10 1 bedroom 1 bathroom
Twin Room

The twin room provides air conditioning, a wardrobe, as well as a private bathroom featuring a bath or a shower and a hairdryer. Rooms on the upper floors are reachable by lift. The unit offers 2 beds.

Max 2 guests 10 1 bedroom 1 bathroom
Quadruple Room

The quadruple room offers air conditioning, a wardrobe, as well as a private bathroom boasting a bath or a shower and a hairdryer. The unit has 4 beds.

Max 4 guests 11 1 bedroom 1 bathroom
Superior Quadruple Room

The quadruple room provides air conditioning, a wardrobe, as well as a private bathroom featuring a bath or a shower and a hairdryer. Rooms on the upper floors are reachable by lift. The unit offers 4 beds.

Max 4 guests 10 1 bedroom 1 bathroom

Hotel Policies

Check-inFrom 16:00 to 23:59
Check-outFrom 00:00 until 11:00
Cancellation & prepaymentCancellation and prepayment policies vary by room type. Please check your booking details before finalizing.
Accepted credit cardsThe hotel reserves the right to pre-authorise credit cards prior to arrival.
The fine printAfter 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. There is no cable or daily cleanings. License number is 1206719-12-181.This property will not accommodate hen, stag or similar parties. Please inform in advance of your expected arrival time. You can use the Special Requests box when booking, or contact the property directly with the contact details provided in your confirmation. Payment before arrival via bank transfer is required. The property will contact you after you book to provide instructions. Guests are required to show a photo identification and credit card upon check-in. Please note that all Special Requests are subject to availability and additional charges may apply.
Last updated: Apr 12, 2024, 12:37 AM

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