We had a great stay with Todd and Amy! The apartment has everything you need and is extremely clean. We appreciated having the AppleTV/Netflix after a long day on the occasional evening.
The location worked very well for us. There are numerous restaurants and coffee shops within a block or two, and it is very close to transportation, the F line (above ground along Market all the way up the Embarcadero), the underground lines, bus routes, etc.
Most importantly, this area felt very safe.
You will hear footsteps from above, but the provided noisemaker definitely did the trick and we slept very well.
We'd definitely recommend this place to others!