If you are actually staying in San Francisco, There is an "RV" park right in the area you ask about. It isn't much when compared to the ones you find in the country, but I believe that there are hook ups and drains. I think it is run by the State of California, Dept. of Parks and REC. It is a fenced in area, with limited access to the riff raff of the city. It used to be a Questionable neighboorhood, but I think with the Building of the SF giants Pac Bell Park, it has improved considerably since. If you have the opportunity to either tow a second vehicle, or are willing to move each day, You might try the Kelly beach RV. campground located in Half Moon Bay. It also is run by the State Parks, and as a bonus, you are really close to the world Famous HVAC. Pacifica is also a neat little city, about 20 minutes from SF. I can do some research and get back to you. Email me direct if I can help. Matt