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440 Post Street, San Francisco, California (Ca), CA 94102 , USA (show map)
Hotel Overview
Formerly Inn At Union Square
Before July 2019 Inn at Union Square, a Greystone Hotel was known as Inn At Union Square

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 Inn at Union Square
Each day we'll check prices and send you an email for your selected dates at Inn at Union Square. 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 Inn at Union Square
General
WiFi everywhere
Services
Free WiFi, Internet services, WiFi
Food & Drink
Vending machine (drinks), Vending machine (snacks)
Front-desk/reception area services
24-hour front desk, Safety deposit box
Cleaning services
Daily maid service
Business facilities
Meeting/banquet facilities
Miscellaneous
Facilities for disabled guests, Heating, Lift, Non-smoking rooms, Non-smoking throughout
Room facilities [ These may vary room to room ]
Bathroom, Cable Channels, Hairdryer, Internet Facilities, Ironing Facilities, Seating Area, Telephone, Wake-up service
Hotel Policies
Check-In
From 16:00:00 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
The property accepts reservations and will rent rooms and other facilities to persons under the age of 18 in cases where either (i) a parent or legal guardian guarantees payment of all charges for rooms, food and beverage, incidentals and damages incurred; or (ii) a person under the age of 18 is legally emancipated and can present documentation at check in showing they are emancipated and can legally contract for services.Guests are required to present at check in a valid photo ID and the credit card used for making their reservation. The name on the reservation, the ID and the name on the credit card must be the same. All special requests are subject to availability and additional charges may apply.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.
Traveller reviews

“Staff was super friendly”
17 May 2025
The location was excellent. I also appreciated the effort made to offset the lack of views — the addition of plants and decorative fountains on the brick walls was a thoughtful touch.

“Superb”
24 Mar 2025
Great location but incredibly quiet. The bed was exceptionally comfortable and clean. Staff welcoming and friendly. The small buffet breakfast good and sufficient to start your day. Good care was taken of our luggage after check out until we departed to the airport. Our room was lovely, with a separate sitting area. Everywhere was very clean and well maintained.

“Great location and comfortable.”
19 Oct 2024
This was our second stay at the Inn. Breakfast was not as good as the first time, stale cakes. Staff friendly and professional. Bed was very comfortable.

“Great”
02 Sep 2024
Friendly staff who were happy to answer questions about how to navigate the city happy to store luggage