I did not find the place when I reached the destination. There is a yard in front of the building with a black steel gate, which I ignored. After a midnight call to Michael, I quickly located the entrance.
Safety is my top priority. And overall, it's a safe stay and I enjoyed the surroundings, although a little bite upset after a quick check of Google's safety map, which colors the place in red. I always kept alerted, esp. after one entire days' exhaustive exploration of NYC. There were still some guys hanging around in night, singing and talking.
The public transportation is very convenient. There is a bus station just on the other side of the road, and you can find the nearest metro terminal after about 10 minutes walking.
I am really appreciated the self check-in and check-out with entrance code sent before I reached the house. I do not like to interrupt others for such things, since the arrival time is hard to control. For example, I were late for more than 3 hours since the greyhound bus was broken. If it's a traditional way to check-in, it will be a disaster for the host, which will upset me as well.
I stayed there up to 3 days. Although I did not meet Michael in person, I am really appreciated his helps via phone calls or prompt emails.