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.
Tell us about your event, then we'll contact you and plan it together
Book a new program with 100+ peak rooms for 2023 or 2024 and receive elevated savings including a 5% rebate on room revenue.
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.
Celebrate in elegant wedding reception venues and meeting space in San Francisco
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.
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.
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.
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.
When you select The Westin St. Francis, you'll enjoy our signature amenities that are designed to enable your groups to preform at their best.
Let our culinary team create a memorable experience. The Executive Chef can design special catering packages with you and your guests in mind. We are eager to work with you to prepare the perfect menu.
From paneled boardrooms to iconic San Francisco ballrooms, our conference rooms exceed expectations
Enjoy ultimate flexibility with separate rooms. These rooms can be separated into smaller breakout rooms, accommodating any group’s needs.
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.
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.
Eight custom chandeliers hang from the ceiling of this stately room. Located in the Landmark Building on the Mezzanine level.
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.
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.
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.
Simple and elegant, the Bristol Room is the perfect location for an office space, or storage location for a larger meeting.
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.
This sumptuous room has been grandly refurbished in rich blue and gold tones with wood-paneled walls. Ornate chandeliers hang from the ceilings.
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
Explore all possible configurations within our meeting spaces and discover the perfect place to host your group with our interactive e-Diagrams.
The Westin St. Francis San Francisco on Union Square has 35 event rooms.
The largest capacity event room is the Grand Ballroom. It has a capacity of 1500.
Yes, The Westin St. Francis San Francisco on Union Square provides wedding services.
To book a meeting or event at The Westin St. Francis San Francisco on Union Square click here
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