Stayed here with a friend for a wedding. The pull out couch and the bed downstairs offered us a nice amount of separation of space for the two of us as opposed to sharing a hotel room.
As some other reviewers have mentioned, a bit of a low ceiling heading down into the basement (master bedroom area). My friend definitely hit his head a couple of times on the ceiling going in and out of the basement. At 5'7, I found I had to lower my head a bit to make sure I didn't hit the ceiling. The space was a bit muggy when I checked in despite fans being on all over the apartment (which having fans on before check in was a nice touch). Once I turned on the small A/C that cleared up pretty quickly.
As long as you have a car (or willing to walk a mile), there are decent amount of restaurants, grocery stores, and other stores at about a mile away from Matt's place. There's also a local convenience store at the end of the block.
I would absolutely consider staying here again if my travels ever bring me back to San Jose.