I never met the host, but I can comment on the room.

Big things first: the location is unbelievably good, and that's what matters most. Well, good for me: near the Moscone center, restaurants and shops right nearby. The price was also reasonable, and between those two things, that's >90% of what matters to me.

Smaller things: this place is run like a hotel. It's one room in a big building with a check-in desk, etc. I didn't realize that, though re-reading the listing I get it now. There was no soap (I didn't know that, but now it's up in the reviews so you know), and no information really -- one of the other reviewers said there was breakfast (??) but I didn't know that and no one told me. There were towels, though, and they were actually really nice soft ones. The wifi was quite good, no problems there. The heat was weak, but I didn't bother to ask about it. The host was temporarily unavailable when I ran into travel problems, though it was Sunday and it worked out totally fine.

Finally, bonus points for having a brewpub on the ground floor! Very handy for happy hour (and the unit is on the 7th floor so any pub noise is not a problem at all).