I stayed 4 weeks in Helga's apartment and I had a wonderful experience throughout. The apartment itself is clean, comfortable and well equipped, and Helga is a brilliant host. She replies promptly to queries and provides lovely, thoughtful touches, even placing baked treats in the fridge for my breakfast every time she came to turn down for the next guests in the other room. The location of the apartment is great for exploring New York - close to buses, the 6 subway (ideal for getting into more central Manhattan) and I was able to walk into the upper east side in about half an hour. I felt totally safe walking round the area in the day, though I tended to get cabs if coming back late at night. Overall I would highly recommend Helga's apartment - a great base for my time in New York!