Well what can I say?! What a fantastic location, right in the city without being in the 'full-on' centre! We caught the BART, and got out of Powell St, walked up the street about 12 minutes & there we were on Pine St!
The apartment is very spacious, particularly the living room. It's on the 2nd level, and there's a lift so you can easily take suitcases to the room. We used the stairs at other times.
We didn't get to meet AC, however he messaged us when we where there a couple of times to ensure everything was ok, or if we needed anything.
The cable cars stopped near the apartment, so if you're not up for walking you could always jump on one of them!
We would highly recommend AC's apartment as it is easily accessible, in walking distance to everything in the city and AC was a great host offering assistance if/whenever we needed.