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1 room, 2 adults

Inn At Union Square - A Greystone Hotel - San Francisco

3.5-star3.5 stars
440 Post St, San Francisco, CA, 94102, United States of America

Boutique hotel, steps from SHN Curran Theatre
  • Free continental breakfast and free WiFi
  • Collect nightsYou can collect™ Rewards nights here
From 1,938 reviews. TripAdvisor Traveller Rating.

TripAdvisor Traveller Rating

Delicious food
Best value for money
Good internet service
Very comfortable

Inn At Union Square - A Greystone Hotel - San Francisco

More Info: 6823 2342

from S$230
  • Superior Room, 1 King Bed
  • Superior Room, 1 Queen Bed
  • Superior Studio, 1 King Bed
  • Superior Suite, 1 King Bed
  • Superior Studio, 1 Queen Bed

What’s around Inn At Union Square - A Greystone Hotel - San Francisco


  • In Downtown San Francisco
  • Westfield San Francisco Centre - 6 min walk
  • San Francisco Museum of Modern Art - 11 min walk
  • Moscone Convention Center - 13 min walk
  • TransAmerica Pyramid - 16 min walk
  • Asian Art Museum of San Francisco - 16 min walk
  • Louise Davies Symphony Hall - 22 min walk
  • San Francisco City Hall - 24 min walk

Getting around

  • San Francisco, CA (SFO-San Francisco Intl.) - 24 min drive
  • Oakland, CA (OAK-Oakland Intl.) - 30 min drive
  • Hayward, CA (HWD-Hayward Executive) - 35 min drive
  • San Carlos, CA (SQL) - 34 min drive
  • Concord, CA (CCR-Buchanan Field) - 40 min drive
  • Novato, CA (NOT-Gnoss Field) - 46 min drive
  • San Francisco 4th and King Station - 23 min walk
  • San Francisco 22nd Street Station - 14 min drive
  • San Francisco Bayshore Station - 16 min drive
  • Powell St. Station - 7 min walk
  • Montgomery St. Station - 8 min walk
  • Civic Center Station - 15 min walk

At a glance

Key facts

Hotel size

  • This hotel has 30 rooms
  • This hotel is arranged over 6 floors


  • Check-in time starts at 3 PM
  • Check-out time is noon

Required at check-in

  • Credit card deposit required

  • Government-issued photo ID required

Travelling with others


  • No cribs (infant beds)


  • Pets not allowed (service animals welcome)


  • Free WiFi in public areas

  • Free WiFi in rooms



  • Valet parking *

Payment types at the property

Other information

  • Smoke-free property
* See small print for additional details or extra charges

In the hotel

Food and drink
  • Free continental breakfast daily
  • Room service
  • Free reception
  • Coffee/tea in a common area
Things to do
  • Use of nearby fitness center (discount)
  • Bicycle rentals nearby
  • Scooter/moped rentals nearby
Working away
  • Business center
  • 24-hour front desk
  • Concierge services
  • Tours/ticket assistance
  • Limo or Town Car service available
  • Dry cleaning/laundry service
  • Laundry facilities
  • Free newspapers in lobby
  • Luggage storage
  • Wedding services
  • Multilingual staff
  • Porter/bellhop
  • Number of buildings/towers - 1
  • Elevator
  • Safe-deposit box at front desk
  • Fireplace in lobby
  • Braille or raised signage
  • Accessible bathroom
  • In-room accessibility
  • Roll-in shower
  • Wheelchair-accessible path of travel
  • Wheelchair-accessible parking
Languages Spoken
  • English
  • Spanish

In the room

Home comforts
  • Ceiling fan
  • Coffee/tea maker
  • Bathrobes
  • Slippers
  • Iron/ironing board
Sleep well
  • Hypo-allergenic bedding available
  • Blackout drapes/curtains
  • Turndown service
  • Premium bedding
  • Pillowtop mattress
Things to enjoy
  • In-room massage available
Freshen up
  • Private bathroom
  • Shower only
  • Designer toiletries
  • Hair dryer
Be entertained
  • 32-inch flat-screen TV
  • Premium TV channels
  • Tablet computer
Stay connected
  • Desk
  • Free weekday newspaper
  • Free WiFi
  • Phone
Food and drink
  • Refrigerator (on request)
  • Free bottled water
  • Daily housekeeping
  • In-room safe (laptop compatible)

Inn At Union Square - A Greystone Hotel - San Francisco’s small print

Also known as

  • Inn Union Square
  • Inn At Union Square - A Greystone Hotel Hotel San Francisco
  • Union Square Inn
  • The Inn At Union Square Hotel San Francisco
  • Inn Union Square Greystone Hotel San Francisco
  • Inn Union Square Greystone Hotel
  • Union Square Greystone San Francisco
  • At Union Square A Greystone
  • Inn At Union Square - A Greystone Hotel Hotel
  • Inn At Union Square - A Greystone Hotel San Francisco


The name on the credit card used at check-in to pay for incidentals must be the primary name on the guestroom reservation.

Optional extras

Valet parking costs USD 53.00 per day

We have included all charges provided to us by this property. However, charges can vary, for example, based on length of stay or the unit you book.

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Recent reviews

Exceptional 9.4 From 433 reviews

Exceptional 10.0
Darling Boutique Hotel
This is a darling small unique hotel in a big city. Great location at Union Square, There is wine and cheese in the evening plus cookies and turn down service. A wonderful continental breakfast The service is friendly and very helpful
Dianna, as1 night romance trip
Exceptional 10.0
Perfect location. Wonderful staff. Small family feel to the hotel.
Maureen, us3 night trip with friends
Exceptional 10.0
secret gem among all the tourist hotels
Outstanding! Excellent service from the moment we pulled up. They wrote a sweet letter and provided champagne and chocolates for our anniversary. We were pleasantly surprised at the size of the suite and all the amenities, free wine and cheese in the evening and free breakfast in the morning. totally charming and reasonably priced.
Patrick, us1 night trip
Good 6.0
Good place to stay if you don't expect much
Great location for sure. Not having a/c during heatwave was not pleasant for my husband. Room not made at 4:15 pm after being out all day is not acceptable. Breakfast items were not filled promptly.
Mari, us3 night romance trip
Exceptional 10.0
A must stay.
This is a really neat little hotel, reminds me very much of hotels in Europe. Small old building just a half block from union square. The rooms are small, but not by city standards, and are very well antiquated. Clean, and updated bathrooms, and very comfortable beds. They have free wine and a decent antipasti spread for free from 5pm-6pm and they put fresh cookies out at 8pm that make the whole hotel smell. The breakfast was a high quality continental breakfast, which I prefer to the standard cheap eggs and potatoes that you find at most business travel hotels.They also have one of those fancy 8 step water dispenser that adds the coconut protein. All the amenities I have listed come standard with the room. Parking is available at the union square garage less than a block away for $36, your I believe they have a Valet option for around $50. The best part for me may be the worst for some. Since this is an old building it is nestled between two others, meaning your window simply looks out on another wall. Its functions and you can get fresh air, but don't expect a few. For me this was actually a plus, though you get no views at all, the rooms was remarkably quite through all hours of the day and night, so despite being right in the middle of the city, it was nearly as quite as my home. Only downside was a lack of a desk, but I dont think most people care. I just worked out in the little parlor that they have on each floor.
Shaun, us1 night business trip

Inn At Union Square - A Greystone Hotel - San Francisco

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