Get rewarded for your meetings. Learn How A symbol of elegance in San Francisco for more than a century, The Westin St. Francis is the only hotel located on Union Square. With more than 56,000 square feet of flexible function space, The Westin St. Francis marries old and new with a fresh sophistication that perfectly showcases its beautiful 1906 architecture. Terms and Conditions ©2015 Starwood Hotels & Resorts Worldwide, Inc. All Rights Reserved. Preferred Guest, SPG, Aloft, Element, Four Points, Le Méridien, Sheraton, St. Regis, The Luxury Collection, W, Westin and their logos are the trademarks of Starwood Hotels & Resorts Worldwide, Inc., or its affiliates. One StarPoint, Stamford, CT 06902 Join SPG Pro, our loyalty offering for meeting and travel professionals. See our Privacy Statement or call 1-877-782-0071 from the U.S. & Canada or +353-21-4930474 in all other countries to learn more about our data collection and usage practices. Review the Starwood Preferred Guest program Terms and Conditions.