Stayed one day in George's place. He is super friendly and easy going. Location of the house is very close to Dolores park, Mission district which has all the cool and nice San Francisco restaurants. If you are here for a business trip and need to take shuttle buses of tech companies, this place is probably very conveniently located for you too.
George owns a cute big cat who doesn't bother you at all. House is on a small hill so when you go out you need to walk uphill.