First, the good things:
+ Wonderful location in the Upper East Side
+ Exceptional price for such a central location and in such a well-to-do neighborhood
+ Nice building with an elevator
+ The apartment has nice fixtures and is equipped with everything you might need
+ Good water pressure in the shower (turn it all the way to hot and then nudge down once you get hot water, it's very quick this way vs. nudging it up from cold you might be waiting a long time)
Things I didn't like:
+ I was told *after* I paid the booking in full that the bed is an air mattress
+ I was not made aware that the stove doesn't work until I received the house manual
+ You have to either ask your taxi/Uber driver to stop at a 7-Eleven so you can pick up and drop off the keys, or you have to walk 0.3 miles with all of your luggage. I have a lot of luggage so I opted for finding Uber drivers who were willing to make the stops, but it was stressful for them because they had to wait in a bus stop or in front of a fire hydrant across the street. It was also stressful for me because I had to leave all of my belongings in the car with the driver and hope that a bus didn't come along and chase him out of the bus stop. The Key Cafe facility was not particularly quick and easy either—I was given a code with letters and numbers but there are only numbers on the key pad (eventually figured out that I could enter my mobile phone number instead, no idea how they expect you to enter a code with letters in it) and the fob scanner didn't work (eventually had to override the non-working scanner and type in the fob's serial number instead).
I can see a strong argument that having an entire apartment to yourself in this location for this price is worth the above three hassles, but I personally would not book again.