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140 Mason St., San Francisco, California (Ca), CA 94102 , USA (show map)
Hotel Overview
Formerly Found Union Square powered by Sonder
Before July 2024 FOUND Hotel, San Francisco was known as Found Union Square powered by Sonder
Before July 2023 FOUND Hotel, San Francisco was known as Sonder at FOUND Union Square
Before June 2022 FOUND Hotel, San Francisco was known as FOUND Hotel San Francisco
Before December 2019 FOUND Hotel, San Francisco was known as San Francisco International Hostel

Lock in a great price now and relax with our Price Guardian working for you
Hotel prices fluctuate. Book now, we will check prices each day for you and then let you know how to re-book if an even better price becomes available.Rooms List
Setup a Price Alert for FOUND Hotel, San Francisco
Each day we'll check prices and send you an email for your selected dates at FOUND Hotel, San Francisco. If you don't have specific dates but would like to check prices for say next weekend or say next month we can check the price too.
When the hotel goes on sale you will know straight away from the daily email and be able to book with confidence that you've got excellent value.
Facilities of FOUND Hotel, San Francisco
Services
Free WiFi, Internet services, WiFi
Food & Drink
Bar, Restaurant
Cleaning services
Daily maid service, Laundry
Business facilities
Business centre
Miscellaneous
Air conditioning, Family rooms, Lift, Non-smoking rooms, Non-smoking throughout
Room facilities [ These may vary room to room ]
Air Conditioning, Bath or Shower, Bathroom, Clothes rack, Desk, Flat-screen TV, Free toiletries, Hairdryer, Heating, Internet Facilities, Iron, Linen, Toilet, Towels, TV, Upper floors accessible by lift, Wardrobe/Closet, Wireless Internet
Hotel Policies
Check-In
From 15:00:00 hours
Check-Out
-11:00:00 hours
Cancellation / Prepayment
Cancellation, prepayment and 'book now pay later' policies vary according to room type. Please check the room conditions when selecting your room above.
Accepted credit cards
The hotel reserves the right to pre-authorise credit cards prior to arrival.
The fine print
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 will not accommodate hen, stag or similar parties.
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.
Guests under the age of 18 can only check in with a parent or official guardian.
Traveller reviews

“Superb”
14 Jun 2025
The young lady at Reception ( Persian - Asal ? ) was a huge help and helped answer so many questions on a daily basis ! we found her advice invaluable when planning our daily tours. Nice to have a friendly face greet you at the end of day !

“Superb”
14 Jun 2025
Good location, rooms were cute and clean. All the staff was lovely!

“The best-value hotel in downtown San Francisco. I highly recommend”
10 Jun 2025
Clean hotel, very comfortable beds, clean private showers, window in the room, relaxation area and very well equipped kitchen area for cooking and fridge.

“Superb”
09 Jun 2025
Good location. They changed the room after we requested the room as the posted one.