My friend and I stayed here for 5 nights. It's a well decorated property, quirky and with lots of personality which we both loved.
The tube is just a short walk away which was great, and it takes about 35-40 minutes to get into central New York (Times Square etc.)
However, the apartment isn't in the upper west side, it's much further north than that and as two women we didn't feel comfortable walking around the area at night. Maybe if you're two guys, or you're in a group it wouldn't be an issue, but for us it was and I'd rather be honest in case any other girls are considering a stay on their own.