We stayed at Emilie's place for one week with my family and it was just perfect! Victoria, Emilie's mother, welcomed us and showed us around when we arrived. The apartment is amazing. It has three very big double-bed rooms with private connection with the bathrooms (2 and big as well - very difficult to find in NYC). Everything was extremely clean with an hyper furnished kitchen.
Emilie's mother was in the apartment just below us, always available if something was needed (not much actually since as said the apartment is amazing and completely equipped). The apartment has a separate entrance so privacy is always guaranteed.
The neighborhood is extremely nice and calm as well. It's Harlem but in fact very different from what you would expect: very nice buildings, parks, nice restaurant and bars, supermarkets.
The position is perfect, very close to both the subway and the bus. And 5 minutes from Central Park (we have been doing jogging there almost every morning!).
So overall I strongly recommend Emilie's place and I will for sure come back in one of my next travels to NYC.