480 Sutter StSan Francisco, CA 94108 Phone: +1 415-398-8900Fax: +1 415-989-8823Toll Free: +800-228-9290 Hotel Website Classification 6 First Class Commission Rooms Rates 10% 400 $402-$454 (USD) Hoteliers! Is your information accurate? Update Here San Francisco Marriott Union Square Location & Neighborhood Downtown; 1 block North of Union Square - 17 MI, 30 min from San Francisco Intl airport.Nearest Cross Street: Powell