Most of the best places that the members like in NYC aren't near where you will be in Manhattan. One of the few that crosses my mind is Naples 45, which is at 45th and Park Avenue. That's only a few minutes walk from where you will be located. I happen to like the Naples 45 pizza, and I have gotten to know Charlie Restivo, the head pizza maker, quite well, so I have no hesitation stopping by to see him and to have some pizza. He has met several of the members from the forum.
If you don't mind taking a cab, or if you can navigate the subway system, you should be able to get to several more places.