Maria's apartment overall is pretty nice, and looks exactly like on the pictures.
We were there during a really cold time (up to -12°C/6°F) so it's probably better when its warmer outside. The thing is that the shower drain pipe froze when it was not in use, so while it defrosted with the warm water of the shower, it always half-flooded the entire bathroom. Also, the rooms were quite cold during the night, we had to use all the blankets that were stored in the closet and some nights even added our scarfs or long underwear.
Furthermore the walls are so thin in the apartment that we could hear the above tenants walk/run around and could even understand words that they were saying. For a short stay I'm sure it's not bothersome, but after a week it was quite a lot to take in. Again, this might be biased since it was around Christmas/NYE where everyone tends to be at home.
The Check-in was very easy and convenient and the Subway is not far away from the apartment. It takes about 25minutes to get to downtown NY.