In the 26+ years we lived in the Bay Area I can't recall a hotel/motel that will provide you with parking space for a 34' MH. You may find something in Daly City, South San Francisco, or San Bruno. All of those are south of the city, but within 10 miles of the financial district.
We'll be in your part of the nation this summer to attend a reunion of my wife's family in Orange City. Plan to see lot's of Iowa during the 2 weeks we are there. Keep the weather cool and dry for us, will you? We don't care for heat or humidity, especially when they come at the same time!!!