Place was overall okay. Convenient location with the C subway train a couple blocks down, and Central Park is super close. Clean & quiet. But there are a number of things that we found to be a bit unpleasant (some of which have been mentioned by others):
1 - The loud noises from the drainage system coming through the walls were unbearable at times, and it made it very difficult to sleep, and we woke up a lot at night.
2 - The bathroom door downstairs gets jammed, and it can be difficult to open/lock at times. Also, the sink gets clogged easily / doesn’t drain quickly.
3 - Very thin walls, which we didn’t expect.
4 - We couldn’t get the thermostat to work for some reason. We tried adjusting it a bunch of times, but it stayed at the same temperature throughout then night when we were sleeping.
Not sure if what I described above is considered normal in the upper west side. The lack of sleep throughout our stay was a huge problem.