Monica and Peter's place is the ideal place to explore SF from. They are 2 of the most welcoming people I have met, full of advice and info about the city and surround areas. The apartment, which is basically the basement of their house which has been renovated to a very high standard, with a fantastic shower and comfortable living areas. Fisherman's wharf is only 10 mins walk away, making this the best area to stay in my opinion. If your thing is fresh seafood, then this is the area for you.
Would stay with them again