I stayed a week in SFO. Ellens place is perfect to explore the city and do business in the city center. It is very central but very quite. Nearby on Columbus are many restaurants and the city center is only 15-20min by bus. And Fishermen's Wharf is only 10min by foot. The apartment is very well equipped with coffee maschine, hot water boiler and has a beautiful terrace. I can highly recommend it.