I had a great stay at Katharina's place. I had a really good communication with her, and she was very helpful. She even waited 2 extra hours for the check-in, as we had some delays with the flight. Also the checkout was very easy and convenient. The apartment was clean and had everything that's needed, and the bed was comfortable. The location is good, if you do not mind to be a bit further away from Manhattan, and I can recommend it also for single travelers. It takes about 10-15min walk to the most nearby subway station.