Most of the pictures below were taken in Pacifica, CA which is just a few miles south of San Francisco. Just above the beach below is a wonderful little RV park in Pacifica. My wife and I lived in this park for three months about 20 years ago while my wife was attending jewelry school in San Francisco.
I highly recommend Pacifica as a place to stay for awhile. It is much more off the beaten path than San Fran. You can get to the big city via a short bus ride and then the Bart, but there is none of the hassle of San Francisco here.