The one down side to this apartment is its location,if you are visiting New York. Having said that, once you know the ropes, it's not so bad. If you are arriving without your own transport, this is the best way to go.
Get yourself to the Port authority Bus Terminal, at the junction of W40th St and 8th Ave. Go to Gate 51, and catch the Community Bus to John F Kennedy Blvd, at the junction with Manhattan Ave. Walk one block to Beach Street. The trip takes 45 minutes and costs just $3.50 each way. And you experience life with the locals.
The apartment is in an old building, which gives it a great character. Everything is there that you might need. We didn't meet Mark in person, but Deena was there when we arrived and was most helpful, leaving us with lots of pamphlets on what to do and where to go.