Even though the apartment is quite far north, it is very well connected by metro and even commuting every day to NYU was not a problem for me. The area is not the nicest, but it is not unsafe. The building is not at all well maintained, but the apartment is really nice. Kitchen and bathroom are modern and big. The small room is indeed very small, but comfortable and clear. I would not recommend it for two people.
As I said, the bathroom, and in particular the shower, are very beautiful. However, the apartment has only one bathroom, so when the second room is also rented out and Vanessa and her husband are at home, it might get a little crowded. We organised and it was never a problem.
There is a supermarket and a pharmacy on the same block. The metro station (1, red line) is just one block away.
I had a hard time finding the lockbox with the keys and the entrance of the building, but this was my fault because I did not realise that Vanessa had sent pictures on the Airbnb app. I managed to get Wi-Fi, looked again at the message with the instructions and finally noticed that by cklicking the "Start Check-in" button some pictures would appear. At that point, everything made sense. So make sure to check that out!
I definitely recommend this room for people travelling alone for a short period of time!