My friends and I came down to SD for a bike ride and needed a place to sleep at the end of the ride. This place worked perfectly, and the host provided air mattresses + sheets + towels as needed. As the one who ended up sleeping on the couch, I'll say that it is quite comfortable as well.
The spot was only a few blocks down from Gaslamp, the convention center, and Petco park, which was perfect for our needs as we didn't want to ride on too many streets if we could avoid it. Street parking was plentiful, and the meter stops at 6pm, with free parking on Sundays, so we could park overnight as needed, no problem.
The only incredibly minor hiccup was that the main door to the complex was a little difficult to open at first, to the point where I wasn't sure if the key was working, but a good pull was all we needed.