Carlo was good and very responsive. The room on the other hand, was laughably bad. The photos correctly represent the items included in the room, but not the condition of the room.
1) There was a decent amount of mold and grime; 2) it's street level and the room is essentially a converted garage, so the "wall" facing the alley allows most street noise through and lacks privacy; 3) the bathroom is in a state of disrepair with too many issues to list (note lack of photos of shower); 4) internet is mostly dial-up speed within the apartment due to poor reception; 5) the futon doesn't fold flat, so if you're a couple, you will both be fighting a slope while you sleep; 6) the room is very damp and the dehumidifier we had to empty twice a day wasn't enough to keep the musty smell down. Hopefully these issues are enough to prevent you from finding out what didn't make the list.
Definitely avoid if you're not traveling solo. You can do a lot better at the price-point that results from the extra person fee.
Location is good, but not enough to overcome the shortcomings and the abundance of other walking-distance airbnb competitors. Even with the very limited amount of time we spent in the room, it was bad enough to sour the trip a little. (Sorry for the length of this review, but I felt obligated due to the disparity between review count/score and reality)