My partner and I stayed in Florencia's apartment for nearly 4 months while in NYC for business. The location is perfect for hoping on the L train to the city (just check that it's running during your stay!) and Grand Street is buzzing with lots of restaurants and bars.
The apartment is clean and well furnished and has everything you would need. It's also only a 20min walk from our favorite bar - Rocka Rolla. One thing to mention is that this is a vegetarian kitchen and doesn't allow the cooking of meat but there are plenty of places near by to get your fix. I'd recommend Robertas for some amazing pizza (try the Bee Sting) or Indian Kitchen which is a couple of blocks away.
Florencia's place became a little home-away-from-home to us and she is a fantastic host and got back to us immediately with any questions we had. I'd recommend her flat to anyone looking to experience NYC without having to stay in the madness of Manhattan.