The Westin St. Francis San Francisco on Union Square


For over 100 years, we’ve hosted illustrious celebrations for socialites, royalty and business leaders, and have some of the best event space in San Francisco. Our superb location, glamorous venues and impeccable service are well suited to a variety of events, from small executive sessions to extravagant galas. We have over 56,000 square feet of space, including 35 unique event spaces. Our expert onsite event planning staff is on hand to help you throughout your event, while guests delight in a range of gourmet options, creating memorable meetings and events.


Event Rooms

50792 SQ FT

Total Event Space


Capacity Largest Space

Start Planning Your Meetings or Events Here

Tell us about your event, then we'll contact you and plan it together

Embark on a Virtual Tour of Our Hotel

From meeting space to guestrooms and more, experience our Downtown San Francisco property from your home or office. Discover all that our hotel has to offer and start planning your experience today.

Weddings & Occasions

Celebrate in elegant wedding reception venues and meeting space in San Francisco

Take in the marble columns, graceful balconies & murals in our 35 venues, each with unique offerings
Plan a lavish wedding reception for 980 guests in our exquisite San Francisco ballrooms
Celebrate where San Francisco big bands used to swing in our downtown San Francisco wedding venues
Host intimate receptions in venues like St. Francis Heights, ideal for your special celebration
Join the wedding party for a fun outing at San Francisco's nightlife venues

Golden Gate

Deemed "the most spectacular special event venue in Northern California," accessed by five glass elevators, and located on the 32nd floor of the Tower Building.

Golden Gate - Banquet

Italian & Grand Ballroom

The Italian pre-function room is a marbled foyer with hand-painted gold ceilings. The 10,000-square-foot ballroom has 16’ ceilings with chandeliers and a stage.

Itlaian and GrandBallroom Combination Crop

Mission Bay

The view from this room is one of the best in the city, with floor-to-ceiling windows, making it the ultimate wedding destination for exchanging vows.

Mission Bay

St. Francis Suite

One of our most treasured wedding facilities, this suite was a residence in the early 1900’s, and has been restored to reflect the historic nature of the room.

St. Francis Suite

Meetings & Events

From paneled boardrooms to iconic San Francisco ballrooms, our conference rooms exceed expectations

Utilize our hotel's 56,000 square feet of downtown conference and meeting space in San Francisco
Host up to 1,100 attendees in The Grand Ballroom, with 33 rigging points for creating event displays
Work with our expert event specialists to design your conference, from room set-up to technology
Invigorate your conference attendees with delicious custom catering from our hotel's culinary team
Block book 10+ rooms when hiring our meeting space in San Francisco for a special rate


Enjoy ultimate flexibility with separate rooms. These rooms can be separated into smaller breakout rooms, accommodating any group’s needs.

Elizabethan Room A - Theatre

California Ballroom

6,000 square feet and can be divided into two separate rooms. Located on the second floor in our Tower Building, the California Ballroom has nine-foot ceilings inlaid with chandeliers.

California Ballroom

Colonial Ballroom

This room used to showcase big bands in the jazz movement. Experience Operetta balcony seating, chandeliers, and a wall-length mural depicting a scene from the Tuscany countryside.


Georgian Room

Located in the Landmark Building on the Mezzanine level, this stately room provides an elegant venue for gatherings.


Tower Salon

The Tower Salon is the only meeting space on our Lobby level. Over 3,000 sq ft, Tower Salon A is a flexible space for your requirements. Tower Salon B is a separate space, sold in conjunction with the General Session room.

Tower Salon Foyer
Small Meeting Spaces
Ascot Room

This room can open to the adjacent Victorian Room through a connecting door.


Enjoy updated light fixtures, carpeting, window treatments. It connects with the Hampton Room and looks out onto Powell Street and Union Square.

Borgia Room

This jewel-box chamber once served as the hotel’s chapel for its live-in guests, and makes a productive meeting space for smaller groups, receptions and dinners.

Bristol Room

Simple and elegant, the Bristol Room serves as an ideal setting for office space, a smaller meeting, or as additional storage for larger events.

Cambridge Room

Located on the second floor of our Landmark Building, the Cambridge Room looks out onto Union Square and Powell Street, and is a great setting for small meetings.

Olympic Room

This sumptuous room has been grandly refurbished in rich blue and gold tones with wood-paneled walls. Ornate chandeliers hang from the ceilings.

Oxford Room

This long, narrow room is perfect for a conference-style meeting or a small reception, and conveniently connects to the Kent Room through a set of double doors.

Discover the best space for your group’s needs

Interactive e-Diagrams

Explore all possible configurations within our meeting spaces and discover the perfect place to host your group with our interactive e-Diagrams.

St. Francis Suite

Frequently Asked Questions