Our stay at Alex's was really great. :-) The apartment is clean and tidy and Alex really is a "superhost". :-)
Unfortunately, we had to check in a day later than expected (because of our flight being canceled), but communication with Alex was really easy.
I especially enjoyed that Alex was available and really nice to talk to. It's a pity we didn't spend more time there.
At any rate, I highly recommend staying there if you need a convenient place in Manhattan.