Kat's place was as expected, though I will admit I was feeling a bit out of shape after taking the 5 flights of stairs up. The unit was very quiet which is hard to find in NYC. The location is great for exploring because it is close to the Union Square subway station which can be used for Uptown, Downtown, or Brooklyn.
It took us a while to figure out how to use the shower, but Kat answered our message immediately with instructions. The wi-fi was fast and the air conditioner was nice and strong. The bed was pretty comfortable and the pillows were alright if you like them on the softer side.
Flexible check-in and check-out was also great.