I visited Mark's place together with my wife and young daughter. The apartment is luxury furnished, just like in the pictures. It is a very pleasant place to be in. It also has superb location with direct bus connection to Stansted Airport(the one we used) and couple of underground lines. The neighborhood is very quiet with couple of playgrounds and a 1 min walk to the daily shop.
Mark was very welcoming. He showed at agreed time for check in, even though it was a bit late due to our flight.
Mark also gave us tips for kids friendly events in the area.
We definately recommend Marks apartment.