The apartment is a 2 minute walk from the metro station. The Metro costs $3.00 (US) per entrance, so not too expensive considering you can get to anywhere in NY. The place is easy to find, and Bertha was very welcoming and friendly. The bedroom is quite spacious with a very clean toilet and sink attached. The room also contains a big closet, a TV, and a fridge! The room is lockable - so it's very secure. I felt safe (for NY standards) in the neighborhood, and the apartment complex itself felt very safe and homely - the people I interacted with during my stay were very friendly. The kitchen is a bit clustered, but clean. There are restaurants, grocery stores, and coffee shops within walking distance. During your stay I highly suggest you visit Inwood park and Fort Tyron - I personally preferred them to central park. If you want good pizza, I highly recommend Noel's Pizza.
I would definitely stay here again if I ever come back to NY.