Absolutely beautiful and HUGE apartment. Virtually everything you could need and my girlfriend claims it was the comfiest bed she has ever slept in! Certainly the nicest and largest Airbnb I've stayed in. There was only 2 of us staying, but you could very easily fit a larger group in there, even though there is only one bed.
Maybe a little far north for some with little time depending on where you plan to visit. We only had 3 nights and spent most of the time south of Union Square and whilst straight forward, was a bit of a trek. That said, would probably be a good location for someone with more time/a more varied itinerary, especially as it is great value! You can walk to the north of Central Park within 10 minutes.
Wifi was the only real downside with it poor at best (there's 3 different networks) and almost impossible to pick up in the back of the property.
Overall, I would totally recommend staying here, especially if the location works for you!