My boyfriend and I had a one week stay in Marc's apartment. It fitted the listing description very well and we were very satisfied considering how much we were paying.
We didn't have too much interaction with Marc - just upon arriving, but we knew that he was always a phone call away if we needed him.
The neighbourhood was great - probably the best part about the place. It's basically at the border between Chinatown and LES so it's pretty diverse. There were many great places to eat and coffee nearby, as well as the Tenement Museum just up the road.
If you're after somewhere that you can sleep and relax, but want to spend most of your time out exploring the city, then this is a great place to do it from.