Heather's place was a fantastic base for us during our couple of days in San Fransisco. The apartment is comfortable and cozy, with a lovely sized living area next to the bedroom (which features a great, comfortable bed) and nice bathroom. Although the road runs outside the apartment, there really isn't very much noise at all - and you really can hear the sea, especially later at night. The muni is extremely close and easy to get to: it runs from the end of the road a 3-4 minute walk away from the house, which can take you straight into the heart of the city on one line.
Heather herself was a fantastic host. She was extremely fast in replying to our questions, gave us a lovely welcome, let us use her washing machine for a much-needed laundry session following our camping trip, and then she even helped us unload some of our camping equipment we couldn't take with us to a local charity! She really is a marvellous host, and I'd recommend staying at her spot if you wanted a place a 60 second walk from the beach and away from the hustle and bustle of the centre of town.