San Francisco Marriott Union Square San Francisco Marriott Union Square Search | Advanced Search | New Members | Coupons and Discounts | All Categories Other >> Hotel Organizations San Francisco Marriott Union Square 480 Sutter StreetSan Francisco, CA 94108 | View on Google MapsMark Coulter (415) 398-8900 Contacts Kathryn Cambra Mark Coulter Kim Ly Lorraine Williamson