We've met Alice at the end of our stay in the apartment but it was easy to contact her through email. During our visit her flatmates showed us around - they were very nice and gave us some tips about the neighbourhood and NYC. There were more people in the house than what was conveyed which was a bit surprising, but easily manageable.
Alice's apartment is in a very good location in Harlem (2 minute to the metro station, and 15-20 min to get to Times Square by metro). The neighbourhood seems safe. Apartment itself is rather big but the room we stayed was smaller than what can be seen in the pictures. And would have been nice if there was some space in the room for our stuff. Unfortunately it was not very clean (same for bathroom). The living room instead was very nice and sunny. An asset of the apartment is air conditioning (or fan) in every room. Overall, I can recommend room Alice's apartment for rather short stay and probably it's better for one person.