This is a lovely little apartment on the upper west side. Ideal for one or two people. It is a brownstone so there are a lot of steps, and the building is quite old, but the apartment is tastefully decorated. We were traveling with a baby, and the space was a bit too tight for us, but I would definitely stay here again if I was traveling alone or with my wife sans kid.
On the communications front, Michael is amazing. He gave us tons of suggestions and checked in with me at least once a day to ask how things were going. Seems like a great guy. If you are visiting from another country, this is a good place to stay for the hosts helpful tips alone. And the location is great as well.