Sebastian is a very friendly host and provided me with anything I needed (hairdryer, adapter for sockets). Check in was very easy and he was always ready to help.
At night it is relatively noisy, but if you are not so sensitive to noise, you can sleep with the window closed without earplugs. But Sebastian even provides you with earplugs if you need them.
As a young, white woman, I didn't feel as safe in the neighborhood as I did in the rest of Manhattan. However, the subway station is very close so it wasn't a problem.