We stayed at Greggs place for two three nights and we had a great time. Gregg is such a nice guy always ready for a chat and willing to give advice for your SF trip. The house is located in a very quiet neighborhood but only after a short walk your in the mission district. There are busses right outside and very close is a J-train stop. Getting to the super touristy stuff such a the Golden gate bridge and Fishermans Wharf will take you a long time. Greggs house is beautiful and you should definitely ask him to show the pictures of the house before all the renovations! Beautiful garden as well. There is a shared bathroom, which was no problem for us but if you're not into that, it might be ;-) To cut this review short: book this place it's amazing and Gregg is a darling!