The room and neighborhood are the way they are described on the aribnb website. The room is very clean; we appreciated the fact of having a bathroom to ourselves (clean, nice hot water etc.). The location is top - given it is right across from the metro entrance.
True, one can hear the metro in the room, guess sensitive sleepers might find that an issue. We were too tired to be bothered.
Catherine welcomed us; very friendly and helpful and gave us some nice 'off the beaten track' suggestions. We only met at that occasion, because we spent our entire days visiting and walking around New York, but she responded immediately to text messages.