We enjoyed our stay at Jeff's place very much!
The apartment is located in a nice neighborhood with lots of independent cafes, where you can grab delicious breakfast and coffee.
The apartment itself is on the ground floor which makes it feel very private.
Jeff is an extremely nice guy, though, so I am sure you'll have some very nice social interactions as well, if you want to.
The apartment has been perfectly clean and well equipped, so you can also prepare sandwiches, tea or some other snacks (no stove).
It's a perfect basis to explore San Francisco.