Our stay in February 2014 was excellent. The apartment was very good and clean. Everything we needed was there and the beds are good. With the shops in the neighborhood (the Pioneer at Lenox Av.) we could make us a good breakfast before we started to explore NY.
The contact with the liaison was good. He gave us tips about things we could do.
There are a few amazing restaurants at Lenox Av. especially the Red Rooster (make a reservation!).
Further the 125th Street has a lot of different shops and even a restaurant for vegetarians.
The metro is nearby at 125th Street and with the A-train you are in about 15 min. in the centre of NY.
We (family with two kids in the age of 16 and 18) enjoyed our stay in Harlem very much.