Andy is very friendly and helpful. He gave us great suggestions and always answered quickly. His roommate is also nice, (We met only one of them.)
Moreover, the location of his place is perfect. It's a few minutes walking to Central Park, Hudson river, and two subway stations. Since it's in Manhatton, we didn't have to waste much time for transportation to several NYC's landmarks.
In summary, if you wanted to stay at an awesome place in NYC, this would be the best one. :)