Great stay! Very clean and comfortable. The other guest staying in a different room of the same airbnb was very cool and sweet!
I lived in Harlem for a while a few years ago so I felt very safe, but if you're a woman traveling alone in this area for the first time, I recommend not walking too much after dark; if you do, carry pepper spray. If you're walking during the day, you should be totally safe. The building itself feels very safe too.