Overall, we had a good stay at Sarah's place. We did not have the chance to meet, but the check in and check out options went without problems, and the communication with her was very good, she is responsive and always providing the detailed, required information .
The flat is located in a rich area full of pubs and restaurants, but a bit far away from a subway. We had to walk in average 15/18 mins from the flat to a convenient subway stop. For New York, it might be normal but for us, after a full day of walking around, and sightseeing it felt quite exhausting.
The flat itself is as advertised, the only downside of it was that it was very warm inside. The AC did not work for us, the two ceiling ventilators made it a it better.