We stayed at Marcus' apartment for fourteen days in August. On the day of our arrival Marcus was out of town which apart from him not being able to meet us at the apartment, also meant we could not reach him by phone. This caused a few problems: We could not get the shower working, the wifi required a code we did not have and the tv was not working. However when we e-mailed Marcus he was quick to call us and fix the problems (apart from the tv). At the day of our departure Marcus did not show up at the time we had arranged, and we had to leave the keys with the super.
Pros: Best location! Conveniently close to the F subway and in walking distance to both many tourist attractions and great neighborhoods. The area is rather up and coming with many great restaurants, cafés etc. The A/C was nice in the summer heat.
Cons: The communication with Marcus could be better. As another review mentioned the lack of tables in the apartment makes it difficult to enjoy a meal there.
Overall a great apartment that we would recommend other people to stay at.