It was all so easy. Booking, checking in, checking out. The apartment was as described, no nasty surprises. We were comfortable and slept well. OK, it's a Manhattan apartment so it's compact, but it is well laid out and furnished. Also very clean and tidy. A couple of very minor problems were dealt with quickly and kindly. Good local facilities for laundry, food, eating out etc.
No hesitation in recommending airbnb and Carlos as host to anyone.