Jeanine and Sergio, her boyfriend, were great hosts to me and they would go out of their way to help me with whatever I needed: from my earlier check-in and the providing of information to get me from the airport to their place to tips on where to eat, where to go and how to transit in the city. Despite their very busy routine, they did make a point of sparing some time to talk to me and get to know me better, which made me feel a lot more comfortable in their place. As for its structure, the appartment is pretty big and cozy and it is exactly as shown in the pics: I just can't help remembering the awesome time I had in NYC when taking a glimpse at them. Well, it was a great start to me in AirBnB and there's no reason I wouldn't recommend you Jeanine and Sergio as hosts! =D
BTW: No, Harlem is NOT dangerous and it is a lovely place. I would easily live there! S2