Carol is a delightful host, a real local who will tell you the best transport and sightseeing tips.
The flat is a wonderful location, with plenty of space especially for the area. It has period charm but is equipped for the 21st C, with fast WiFi and good Aircon (handy for a summer trip!).
The area was extremely easy to get to from Penn Station and a short walk to Central Park and all the delights of NYC!
I didn't use public transport at all during my stay and it was great to see this city by foot.
I felt safe at all times and found some lovely lunch spots. Carol was responsive and friendly, and very expert at hosting guests. I even ate my evening meal (veggie of course!) in the apartment, and it was great to feel that I could be in some of the time (New York can be expensive to eat out all the time)
Would definitely return to the Upper West Side!