This was my first time in New York and in USA at all, and fist time doing with Airnbnb and staying in appartment. And it was very good. Mark's appartment is clean and bright (high ceilings) and comfortable and well appointed (not fa from subway). The room is large, anough for one or two persons. There is a large bed with convenient mattress, wardrobe for clothes, written and coffee tables, floor lamps.
Mark will stock food items if you need, and he provides plenty of bed lines and towels.
Mark himself is a wonderful person. He is kind, respectful, helpful, knowledgeable about the city.
Mark has two dogs in appartment. But it is even nice. The dogs are very clean and funny. If you want to you can play with them, if not - they aren't visible and heard.
In short, my general impression - you on a visit at the friend. I'd recommend to stay at Mark's if you want to enjoy New York to the fullest