Mark's place was perfect! Comfortable, well equipped and perfectly located. In the apartment itself there was plenty of space, comfortable, quality furniture (especially the bed), electric fireplace and air conditioning. All the appliances and soft furnishings were good quality and condition. There was cable TV available in the living room and bedroom and excellent wifi connectivity. As we were there for 2 weeks it was great to have plenty of space to spread out and put things away so we weren't living out of suitcases - there was more hanging and drawer space than visitors would every need. There is a laundry in the building and Mark left a card for us to use the machines. The building seems pretty new so everything is in good condition. Mark was a great host, very solicitous of our comfort and always available.
The location was fabulous: a relatively quiet street with so many great restaurants within strolling distance that we could eat at a different place serving different cuisines every day and night for two weeks! On each of the nearest corners there were great restaurants and between these just outside our door were several more. We could walk to Central Park, Park and Madison and 5th Avenues and the lovely Carl Schurz Park (which Mark recommended and I would also recommend for at least one visit). It was a short walk to the subway. Its a great area with markets and other shopping nearby and we felt very safe walking about even late at night.
We would definitely stay there again and unreservedly recommended it to anyone visiting New York.