Our stay was only for one night. If you aren't looking for big frills and such, its a very safe and comfortalble alternative. It's relatively close to "all the action" in San Francisco without being loud or massive. Accomodations are more modest but in a place with so much to do and see where one is unlikely to be hanging around all day in their room, that makes it quite ideal.
If you're looking for pampering and all sort of services, Star Motel isn't for you. If you're looking to visit San Francisco and have a clean, affordable, safe lodging option that is conveniently located near so much great stuff in the city (as we were), then Star Motel is fantastic. Also, the "retro" theme was kind of fun.