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Inn At Union Square

Property class: 3.5
3.5-star boutique hotel near Moscone Convention Center

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Photo gallery for Inn At Union Square

A hotel room with a bed, two armchairs, a small table with a laptop and a glass of water, a lamp, a TV displaying a scenic image, and a large window with curtains.
A modern dining area with a long table and chairs, a kitchen counter with breakfast items, and geometric pendant lighting.
A modern living room with a fireplace, a flat-screen TV mounted above it, a sofa with a cushion, and a floor lamp.
A living room with a fireplace, a clock, a sofa, and a lamp.
A red sign for The Inn at Union Square, 440 Post Street, with a dark wooden door and green walls.

Reviews

9.2 out of 10
Wonderful

Popular amenities

  • Free WiFi
  • Business services
  • Housekeeping
  • 24/7 front desk

Explore the area

View in a map
440 Post St, San Francisco, CA, 94102
  • Place, Union Square
    ‪1 min walk‬
  • Place, Westin St Francis Hotel Glass Elevators
    ‪2 min walk‬
  • Place, SF Masonic Auditorium
    ‪5 min walk‬
  • Airport, San Francisco, CA (SFO-San Francisco Intl.)
    ‪22 min drive‬

Room options

View all photos for Superior Room, 1 King Bed

A hotel room with a large bed, two bedside tables, a nightstand, and three framed pictures on the wall.

Superior Room, 1 King Bed

  • Sleeps 2
  • 1 King Bed

View all photos for Superior Room, 1 Queen Bed

A hotel room with a large bed, two bedside tables, and three framed pictures on the wall.

Superior Room, 1 Queen Bed

  • Sleeps 2
  • 1 Queen Bed

View all photos for Superior Studio, 1 King Bed

A hotel room with a bed, two armchairs, a small table with a laptop and a glass of water, a lamp, a TV displaying a scenic image, and a large window with curtains.

Superior Studio, 1 King Bed

  • Sleeps 2
  • 1 King Bed

View all photos for Superior Suite, 1 King Bed

A hotel room with a large bed, two bedside tables, a nightstand, and three framed pictures on the wall.

Superior Suite, 1 King Bed

10.0 out of 10
Exceptional
(1 review)
  • Sleeps 2
  • 1 King Bed

View all photos for Superior Studio, 1 Queen Bed

A hotel room with a large bed, two bedside tables with lamps, a sofa, and a patterned carpet.

Superior Studio, 1 Queen Bed

  • Sleeps 2
  • 1 Queen Bed

View all photos for Superior Room, 1 King Bed, Accessible

A large bed with white linens, two nightstands with lamps, and three framed pictures on the wall.

Superior Room, 1 King Bed, Accessible

  • Sleeps 2
  • 1 King Bed

View all photos for Suite (Spreckels)

A hotel room with a large bed, two bedside lamps, a desk with a laptop, and a chair.

Suite (Spreckels)

  • Sleeps 2
  • 1 King Bed

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About the area

San Francisco

Union Square stay.A stay at this Union Square hotel places you steps from Union Square and within a 10-minute walk of SF Masonic Auditorium. Oracle Park and Lombard Street are also within 2 miles (3 km).

What's nearby

  • Union Square - 1 min walk - 0.1 km
  • Westin St Francis Hotel Glass Elevators - 2 min walk - 0.2 km
  • SF Masonic Auditorium - 5 min walk - 0.4 km
  • San Francisco Museum of Modern Art - 10 min walk - 0.8 km
  • Moscone Convention Center - 11 min walk - 1.0 km

Getting around

  • Powell St & Post St Stop - 1 min walk
  • San Francisco Station - 2 min drive
  • San Francisco Intl. Airport (SFO) - 30 min drive

Restaurants

  • ‪Golden Gate Tap Room - ‬1 min walk
  • ‪McDonald's - ‬3 min walk
  • ‪7-Eleven - ‬2 min walk
  • ‪Pacific Cocktail Haven - ‬3 min walk
  • ‪Bluestone Lane - ‬3 min walk

About this property

Inn At Union Square

3.5-star boutique hotel near Moscone Convention Center
Inn At Union Square offers its guests a vending machine and an elevator. WiFi is free in public spaces.

This 3.5-star San Francisco hotel is smoke free.

  • 1 building
  • 30 guestrooms or units
  • 6 levels
  • Front desk (24 hours)
  • Elevator
  • No smoking on site
  • 1 conference room
Inn At Union Square offers 30 accommodations with laptop-compatible safes and coffee/tea makers. Pillowtop beds feature premium bedding. 32-inch flat-screen televisions come with premium cable channels. Bathrooms include showers, bathrobes, designer toiletries, and complimentary toiletries.

This San Francisco hotel provides complimentary wireless Internet access, with a speed of 100+ Mbps (good for 1–2 people or up to 6 devices). Business-friendly amenities include desks and phones. Additionally, rooms include hair dryers and irons/ironing boards. Hypo-allergenic bedding, change of towels, and change of bedsheets can be requested. Housekeeping is provided daily.

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  • Business services
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Property amenities

Family friendly

  • Mini-fridge

Internet

  • Available in all rooms: Free WiFi
  • In-room WiFi speed: 100+ Mbps (good for 1–2 people or up to 6 devices)
  • Available in some public areas: Free WiFi

Accessibility

  • If you have requests for specific accessibility needs, please contact the property using the information on the reservation confirmation received after booking.
  • Braille/raised signage
  • Elevator
  • Grab bar in shower
  • Low-height bed
  • Wheelchair accessibility
  • Wheelchair accessible (may have limitations)
  • Wheelchair-accessible path of travel

Room amenities

Entertainment

  • 32-inch flat-screen TV with premium cable channels

Bedroom

  • Blackout drapes
  • Hypo-allergenic bedding
  • Pillowtop mattress
  • Premium bedding

Bathroom

  • Bathrobes
  • Designer toiletries
  • Hair dryer
  • Private bathroom
  • Shower
  • Toothbrush and toothpaste (on request)
  • Towels provided

Food and drink

  • Coffee/tea maker
  • Mini-fridge

More

  • Desk
  • Iron/ironing board
  • Laptop-compatible safe
  • Phone

Policies

Check-in

Check-in start time: 4:00 PM; Check-in end time: 11:00 PM
Early check-in subject to availability
Early check-in is available for a fee
Contactless check-in available
Late check-in subject to availability
Minimum check-in age: 18

Check-out

Check-out before 11:00 AM
Contactless check-out available
Late check-out subject to availability
A late check-out fee will be charged

Special check-in instructions

Front desk staff will greet guests on arrival at the property
If you are planning to arrive after noon please contact the property in advance using the information on the booking confirmation
Information provided by the property may be translated using automated translation tools

Access methods

Staffed front desk

Pets

  • No pets allowed, but service animals are welcome

Children and extra beds

  • Children are welcome.
  • Rollaway/extra beds are not available.
  • Cribs (infant beds) are not available.

Property payment types

  • American Express
  • Discover
  • Mastercard
  • Visa

Important information

Fees

Guests will be asked to pay the following charges at the property:

  • Deposit: USD 200 per accommodation, per stay

We've listed all charges provided to us by the property.

Optional extras

The fees and deposits listed below will be charged at the time of service, check-in, or check-out.

  • Early check-in is available for a fee (subject to availability)
  • Late check-out is available for a fee (subject to availability)

This may not be a comprehensive list. Fees and deposits are subject to change and might not include tax.

You need to know

Extra-person charges may apply and vary depending on property policy
Government-issued photo identification and a credit card may be required at check-in for incidental charges
Special requests are subject to availability upon check-in and may incur additional charges; special requests cannot be guaranteed
The name on the credit card used at check-in to pay for incidentals must be the primary name on the guestroom reservation
This property accepts credit cards; cash is not accepted
Cashless transactions are available
Safety features at this property include a carbon monoxide detector, a fire extinguisher, a smoke detector, and a security system
Charges for extra guests may apply and vary according to property policy.
A credit card for incidental charges and government-issued photo identification may be required upon check-in.
Special requests are subject to availability at the time of check-in. Special requests can't be guaranteed and may incur additional charges.
    This property is managed by a professional host. The provision of housing is linked to their trade, business, or profession. The name on the credit card used at check-in to pay for incidentals must be the primary name on the guestroom reservation. This property accepts Visa, Mastercard, American Express, and Discover. Cash is not accepted. 
    For guests' safety, the property includes a carbon monoxide detector, a fire extinguisher, a smoke detector, and a security system in each accommodation. Cashless payment methods are available for all transactions.

Property is also known as

Inn Union Square
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
Inn At Union Square Hotel
Inn At Union Square San Francisco
Inn At Union Square A Greystone Hotel
Inn At Union Square Hotel San Francisco

Frequently asked questions

How close is Inn At Union Square to the airport?

Inn At Union Square is 19.4 mi (38-min drive) away from the Oakland Intl. Airport (OAK) airport, the closest popular airport to the property.

How much does it cost to stay at Inn At Union Square?

As of Oct 20, 2026, prices found for a 1-night stay for 2 adults at Inn At Union Square on Oct 25, 2026 start from CA $251, excluding taxes and fees. This price is based on the lowest nightly price found in the last 24 hours for stays in the next 30 days. Prices are subject to change. Choose your dates for more accurate prices.

Does Inn At Union Square have an airport shuttle?

Airport shuttle services are not available at Inn At Union Square.

How close is Inn At Union Square to the beach?

This hotel is 6.2 mi (34-min drive) from Ocean Beach.

Does Inn At Union Square offer free breakfast?

Inn At Union Square does not offer free breakfast.

Is there a casino at Inn At Union Square?

No, there is no casino at this hotel, but San Pablo Lytton Casino (21-min drive) is nearby.

What time is check-in at Inn At Union Square?

Check-in start time: 4:00 PM; Check-in end time: 11:00 PM. A fee applies for early check-in.

Is there free parking at Inn At Union Square?

Free parking is not available at this hotel.

Does Inn At Union Square have a pool?

Inn At Union Square does not have a pool.

Does Inn At Union Square have a spa?

There are no spa services available at this hotel.

How close is Inn At Union Square to downtown San Francisco?

Inn At Union Square is 1.1 mi away from San Francisco.

Inn At Union Square Reviews

Reviews

9.2

Wonderful

Rating 10 - Excellent. 702 out of 1008 reviews
Rating 8 - Good. 193 out of 1008 reviews
Rating 6 - Okay. 62 out of 1008 reviews
Rating 4 - Poor. 25 out of 1008 reviews
Rating 2 - Terrible. 26 out of 1008 reviews

9.6/10

Cleanliness

9.4/10

Staff & service

8.6/10

Amenities

9.0/10

Property conditions & facilities

Reviews

Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Great location and great staff.
Stayed 3 nights in Jul 2026
Verified review

8/10 Good

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Great location, very friendly staff.
Stayed 1 night in Jul 2026
Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Perfect location for meeting our tour groups.
Stayed 1 night in Jul 2026
Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
The room and facilities were very clean, the staff were friendly and attentive, and the price was great!
Stayed 2 nights in Jul 2026
Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Great location, easy access to parking garage, rooms are very nice, and staff was extremely helpful
Stayed 3 nights in Jul 2026
Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Excellent stay
Stayed 3 nights in May 2026
Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
We were very pleased with the room, location and parking options.
Stayed 1 night in May 2026
Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
We booked three rooms at this hotel as a base for our large group while visiting San Francisco. We really enjoyed the stay and the great central location. Antonio at the front desk was really helpful and polite, making sure our check in was easy and that we had all of the information we needed.
Stayed 1 night in Jul 2026
Verified review

8/10 Good

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Overall good stay. Location is excellent with very helpful staff. Only let down was the breakfast which was not good at all.
Stayed 1 night in Jul 2026
Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
This property is conveniently located. The bed was comfortable and their is a nice continental breakfast option included.
Stayed 1 night in Jun 2026
Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
I loved the central location and the charm of the hotel. I felt safe as a solo traveler. All of the employees were very friendly, helpful and knowledgeable.
Stayed 2 nights in Jul 2026
Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
This is a nice boutique hotel. Good size room . Good location. Breakfast is a nice touch .
Stayed 1 night in Jun 2026
Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
So quaint and quiet. The location was superb!
Stayed 1 night in Jun 2026
Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Beautiful hotel, rooms were clean, all staff was very friendly. Centrally located.
Stayed 2 nights in Jun 2026
Verified review

8/10 Good

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Breakfast could be better
Stayed 1 night in Jul 2026
Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Clean and comfortable. Great for families
Stayed 7 nights in Jun 2026
Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
This was very clean! And that’s number one to me. The staff was very kind and helpful as well. Will stay again.
Stayed 1 night in Jun 2026
Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Perfect location. Air conditioning was a bit loud
Stayed 2 nights in Jun 2026
Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Great breakfast and very clean rooms
Stayed 3 nights in Mar 2026
Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
I had a great stay at The Inn at Union Square The front desk staff were incredibly friendly, welcoming, and always willing to help with anything we needed. The place was very clean quiet and comfortable, which made my stay even more enjoyable. One of the best things about this hotel is its excellent location it's just a short walking distance from the luxury brand stores and other attractions in Union Square. I would definitely stay here again and highly recommend it to anyone visiting San Francisco
Stayed 2 nights in Jul 2026
Verified review

10/10 Excellent

Liked: Cleanliness, amenities
I would like to thank Antonio the front desk representative for his hospitality and assistance
Stayed 1 night in Jul 2026
Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Clean room, breakfast, location
Stayed 6 nights in Mar 2026
Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Staff was friendly. Check in was seamless, and we were allowed to check in early. That was amazing and super helpful. The property has very comfortable beds and pillows. The breakfast is very basic but satisfying enough. The property is convenient to a trolley stop and you can cruise around anywhere you want with minimal walking.
Stayed 3 nights in Jul 2026
Verified review

8/10 Good

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
The hotel was nice overall. Antonio was very helpful at check-in and very kind to offer an upgraded room for our stay. The room was comfortable and clean. Check-in was a bit chaotic given you have to unload/park on a busy street, but being near the busy street was a plus, given you are near public transit. The location is super nice for that. Breakfast offerings were standard, but you should try local spots for food!
Stayed 2 nights in Jul 2026
Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
It was a cute, quaint hotel. Very clean . Friendly staff.
Stayed 3 nights in Jun 2026