We had a great time in San Francisco. Mike and Nic's place is in a quiet neighbourhood just 20-25 minutes away from downtown (bus lines 9 and 9L) and 5 minutes away from the Mission (bus line 67). Although the area is quite hilly, as one would expect in SF, and the streets around Bayshore Boulevard feel rather dubious at night, if you are looking for a clean, affordable place to stay in the city this is definitely a good option. Could have done with comfier beds, but on the bright side we had complimentary tea, coffee, crackers and biscuits waiting for us.
Mike and Nic were easy to communicate with and were fast and helpful answering our questions. We met Nic the last day and she was really friendly.