The Westin St. Francis San Francisco on Union Square
A Westin hotel. Rialto is a Marriott Luminous agency: book this hotel direct at the VIP rate for benefits that can include priority room upgrades, hotel credits, and more.
335 Powell Street, 94102 San Francisco, CA, United States
Book direct at the Marriott Luminous VIP rate, instantly
A direct booking with the hotel, confirmed instantly on Rialto — no contact form or middleman. Hotel loyalty points and elite status apply where applicable.
Marriott Luminous is Marriott's invitation-only VIP program, open to a small group of luxury travel agencies. VIP rates generally meet or beat the hotel's website rates and include the amenities below. The booking is a direct reservation with the hotel, so it earns Marriott Bonvoy points and elite-night credit, and Marriott Bonvoy elite status benefits apply.
- Daily breakfast for two
- Hotel credit per stay at select hotels
- Room upgrade on arrival, based on availability
- Early check-in and late check-out, based on availability
- Welcome amenity
- Marriott Bonvoy points, elite nights and status benefits, as this is a direct hotel booking
- Nightly Upgrade Awards can be applied to these rates
Get live availability and self-book
Rooms and suites
Room type data is subject to change and accuracy cannot be guaranteed.
Book with your AI assistant
Set up the connector →- 1Connect Rialto to Claude or ChatGPT: it is an MCP server, added from the connector settings in one step.
- 2Ask for The Westin St. Francis San Francisco on Union Square on your dates. The assistant returns live VIP, corporate and public rates with the benefits named per rate.
- 3Finish on a secure Rialto page. The booking is instant and direct with the hotel; card details never pass through the chat.
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Appears in
- Hotels with an upgrade at booking in San Francisco, CA
- Hotel offers in San Francisco, CA
- Marriott STARS & LUMINOUS hotels with an upgrade confirmed at booking
- Marriott STARS & LUMINOUS hotels in San Francisco, CA
- Marriott STARS & LUMINOUS hotels in the United States
- Westin hotels with Marriott STARS & LUMINOUS
- Connecting rooms in San Francisco, CA
Frequently Asked Questions
Does booking through Rialto cost more than booking with the hotel?
No - VIP rates under Marriott Luminous always meet or beat hotel's public, flexible rate, and provide valuable amenities and possible upgrades. Rialto also provides the hotel's non-VIP and corporate rates, so you can compare with full transparency.
Can my AI assistant book this hotel?
Yes. Connect Rialto to Claude or ChatGPT with our AI hotel booking MCP server and ask for rates. You finish the booking instantly on a secure Rialto page, direct with the hotel. Card details are not sent through the AI chat, so either you would approve the final checkout step and reconfirm all the information, or if you authorize your agent with Computer-Use permissions, it can fill out the checkout form as well.
What is the value of the VIP benefits?
Daily breakfast for two plus the hotel credit come with every stay at this hotel - adding $100-200/day in value. A room upgrade could also be worth a substantial amount, in addition to early check-in / late check-out benefits when available.
Do I earn Marriott Bonvoy points and keep my elite benefits? Is this considered a direct booking or a third-party booking?
Yes. The booking is a direct reservation with the hotel, so it earns Marriott Bonvoy points and elite-night credit, and Marriott Bonvoy elite status benefits apply.
What room types does The Westin St. Francis San Francisco on Union Square offer?
The Westin St. Francis San Francisco on Union Square lists Traditional Queen, Landmark Building, Traditional King, Landmark Building, Traditional Double, Landmark Building, Grand Deluxe King, City View, Grand Deluxe Double, City View, Deluxe King, Tower Building and 16 more. Sizes and bed options for each are in the rooms table above.
How does this compare to other programs, like through AMEX Fine Hotels & Resorts, or Chase Edit?
Using a hotel's own VIP program may provide higher upgrade priority, additional VIP benefits and promotional rate offers, and a direct relationship with the hotel for special requests. Rialto offers more VIP hotels than any credit card program. In addition, Chase Edit rates can be substantially more expensive as they rarely run promotions whereas AMEX rates are often comparable but do not offer programs such as Upgrade at Booking.
Rates are shown to members
Membership is complimentary. Create your Rialto account to see member rates and book instantly.