We enjoyed our stay at Ephraim's apartment in Harlem. The area is quiet, near a nice park and a cool brunch spot. 3' away from the underground (C train) allows you to get to the city center in less than 30'.
The apartment is clean, comfortable and Ephraim is a good host. He even gave us some courtesy cookies and a bottle of water. The bed is so good. The only problem we had was that due to the A/C, it was a dripping sound every night that took us a while to get used to it.
I think is a really good value for money and we wouldn't hesitaste to use it for our next trip.