That was my first time in New-York, I spent 5 days in Elisa's flat and I would recommend this place to anyone.
The whole is apartment is clean, you have the A/C in the room so even during the summer you can have really nice deep sleep without having problem with the heat.
Elisa is a nice host, she will give help you and give you informations to come to her place from the different airports without problem.
I had nice talks with her, you can ask her anything she is a really nice person and plus she has a really sweet cat named Milo, he is really friendly so you'll have a good friend when you'll decide to hang out in the apartment.
The flat is located in Harlem, it is a very safe environment and you'll have no problems with the neighborhood and you can find a lot of thing you need around. The nearest subway is so close to the flat, that's a really good point !
I don't need to say much more, just have fun in the beautiful New-York city and enjoy Elisa and Milo apartment :)