(This post is from the blog of the Mother of Invention Acting School in San Francisco (www.utteracting.com): an acting class in San Francisco for serious, motivated students.)
I met with a prospective student recently who was visiting SF from Barcelona on her way around the world. She told me about this website called couchsurfing.com where you can find people in cities you are going to visit who will elt you sleep on their couch for FREE. She said she has had great experiences both as a host and a guest, and a cursory look at the website reveals that many other people have had a similar experience. So checkitOUT!