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Hotels of Earth

Inn at Union Square

★★★ 440 Post Street, San Francisco, US

9.4 guest rating· 487 reviews

About this hotel

Sophisticated Boutique Hotel Retreat

Experience the charm of The Inn at Union Square San Francisco, a unique and sophisticated hotel nestled in the vibrant heart of Union Square.

Prime Location

Located in the center of it all, our boutique hotel offers easy access to a wide array of San Francisco's top sights and attractions.

Proximity to Iconic Landmarks

Enjoy being just minutes away from famous landmarks such as the iconic cable cars, Golden Gate Bridge, and Fisherman's Wharf.

Book your stay now at The Inn at Union Square San Francisco for an unforgettable experience in the heart of the city.

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Rooms & rates

Suite

Sleeps 2 · 47 m² · Extra-large double bed (Super-king size)

  • Private bathroom
  • Telephone
  • Hair dryer
  • Seating Area
  • Cots

Double Room

Sleeps 2 · 21 m² · Queen bed

  • Telephone
  • Hair dryer
  • Seating Area
  • Cots

Double Room

Sleeps 2 · 32 m² · Extra-large double bed (Super-king size)

  • Telephone
  • Hair dryer
  • Seating Area
  • Cots

Double Room

Sleeps 2 · 15 m² · Queen bed

  • Telephone
  • Hair dryer
  • Seating Area
  • Cots

Suite

Sleeps 2 · 32 m² · Extra-large double bed (Super-king size)

  • Private bathroom
  • Telephone
  • Hair dryer
  • Seating Area
  • Cots

Double Room

Sleeps 2 · 20 m² · Extra-large double bed (Super-king size)

  • Telephone
  • Hair dryer
  • Seating Area
  • Cots

Double Room

Sleeps 2 · 25 m² · Extra-large double bed (Super-king size)

  • Telephone
  • Hair dryer
  • Seating Area
  • Cots

Superior Room, 1 King Bed

Sleeps 2 · King bed

  • Desk
  • Bathrobe
  • Private bathroom
  • Coffee/tea maker
  • Free WiFi

Superior Studio, 1 King Bed

Sleeps 2 · King bed

  • Desk
  • Bathrobe
  • Private bathroom
  • Coffee/tea maker
  • Free WiFi

Superior Room, 1 King Bed, Accessible

Sleeps 2 · King bed

  • Desk
  • Bathrobe
  • Private bathroom
  • Coffee/tea maker
  • Free WiFi

Amenities

  • Free WiFi
  • Screens / Barriers between staff and guests for safety
  • 24-hour front desk
  • Non-smoking rooms
  • Non-smoking throughout
  • Cashless payment available
  • CCTV in common areas
  • CCTV outside property
  • Cleaning standards that are effective against Coronavirus
  • Daily housekeeping
  • Delivered food - securely covered
  • Facilities for disabled guests
  • Fire extinguishers
  • Food delivered to guest room
Show all 29 amenities
  • Guest rooms disinfected between stays
  • Guests can opt-out any cleaning services during stay
  • Hand sanitizer in guest room and key areas
  • Heating
  • Invoice provided
  • Key card access
  • Laundry washed per local authority guidelines
  • Lift / Elevator
  • Meeting/banquet facilities
  • Safety deposit box
  • Security alarm
  • Smoke alarms
  • Staff adhere to local safety protocols
  • Vending machine - drinks
  • Vending machine - snacks

Location

© OpenStreetMap contributors

440 Post Street, San Francisco, US

Check-in
from 04:00 PM to 12:00 AM
Check-out
until 11:00 AM

What guests say9.4487 reviews

+ Ideal location+ Friendly and helpful staff+ Clean and comfortable rooms+ Good breakfast optionsHidden fees charged after stayIssues with Wi-Fi accessibility
Cleanliness9.3
Service9.8
Location9.8
Room Quality9.3
Amenities9.3
Value for Money8.7

Great experience thanks to Antonio

10.0

We had a very pleasant stay in very central San Francisco. The room was well equipped and cleaned. When we came we were greeted by Antonio, who helped us check in. He kindly offered us a room on higher floor, which would be less noisy in the morning so we could sleep in.

robertbA2469US · 2026-07-28

A very nice, small hotel

10.0

A very nice little hotel with personal touches throughout. Housekeeping comes everyday to refresh the room without needing prompting which is becoming a rare thing in 4* hotels. The continental breakfast was modest but satisfying with pastries, bagels, fruits and yogurt available. All in all, highly recommended

Lindasek · 2026-07-27

Birthday Stay in the City

10.0

We’ve stayed numerous times and have always appreciated the service of the staff, especially Antonio at the front desk. The rooms have always been spacious and comfortable. The rooms are laid out well, wifi and tv reception are satisfactory, bathrooms have adequate water flow and pressure, very clean rooms, and comfortable beds. The maid service is exceptional. The breakfast room is well stocked. The parking is convenient and reasonably priced.

SacMax · SACRAMENTO, CALIFORNIA · 2026-07-20

A great spot for a nice getaway to the city!

10.0

Perfect spot at a reasonable price! It's an older building, but the noise level is very good, could barely hear anything neighboring. The decor is really lovely and fitting for the time. Esly front desk was super accommodating and the sweetest! The rooms were clean upon entering. Very comfortable bedding and a cozy room. Amenities were simple and efficient.

C4727UYhollym · 2026-07-20

Good customer service

10.0

Very nice hotel and the front service guy Antonio is one of the nicest front desk ppl I have met

369juanfranciscom · 2026-07-20

A comfortable and convenient stay in a great location

9.0

Excellent location near Union Square. The room was clean, comfortable, and charming, and the staff were friendly. It was a convenient choice for a short stay in San Francisco.

N/A

YU · US · 2026-07-20

Good to know

The property accepts reservations and will rent rooms and other facilities to people 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 ID and credit card upon check-in. Please note that all Special Requests are subject to availability and additional charges may apply.

A deposit may be required at the property.