Andy had informed me in advance that he would be out of town during my stay, but he had referred me to his flatmate Keith, who very kindly took care of everything and made me feel comfortable.
I arrived very early in New York (7.30 am) and Keith was happy to let me into the apartment so early, so that I could leave my bag there. When the room became free in the afternoon he sent me a message to inform me.
So everything was perfectly taken care of, and also the room (I had the private room) perfectly suited my stay. Also, I could get to Manhattan very easily and quickly by metro.
I would definitely stay there again when I return to NY!