My wife and I stayed for a little under a week at Catherine's place and had a lovely stay. The location in the Upper West Side is perfect. Her place is around a 7 minute walk to the 79th street "1 line" subway station. We didn't take the bus at all, but there are several stops in the area. We did walk to the MET and that took around 25-30 minutes. There are several diners, restaurants and supermarkets a short walk away even though for a couple blocks in all directions it is purely residential (from what we saw). This was really nice as it meant the immediate area was low-traffic and quiet during the day and night.
The place itself is a lived-in thoughtfully decorated & furnished studio apartment with a couch for lounging, a table for eating, a bed for sleeping and a wardrobe for hanging clothes. At night we slept well and were genuinely surprised by how quiet the room was (other than the steam kicking on from the radiator, but you're going to find that in most older buildings in NYC; bring earplugs to sleep with if you think it will bother you). There was tea, a stovetop teapot and coffee with a coffee maker for the mornings. The bed is just the right size for two people that don't mind a full/double size (?) and the room was plenty warm in the winter with the provided space heater for extra heat whenever it got a little chilly. We didn't cook much other than heating up leftovers in the oven, but there seemed to be everything we would have needed to do so (fridge, gas stove, sink, utensils, plates, etc).
It was really nice to have an elevator to get up to the room on the 6th floor. Other than the couple of steps up to the lobby, we didn't need to climb stairs at all and there was never a wait for the elevator.
Catherine left the day we arrived and returned the day we returned so we didn't get to meet her, but her friend met us at the apartment to let us in and show us around and Catherine was friendly and responsive via the Airbnb app. We were also appreciative that Catherine was so very accommodating as our plans for arrival and departure changed a few times.
All in all Catherine's place was exactly what we were looking for and we were very happy with our stay.