I've been there with my wife for two weeks between Christmas and the new year eve and everything was lovely.
The apartment is not very big but is really comfortable for two people, is clean and is full of appliances,
very warm (a feature that we really liked while outside was snowing) and with Netflix and a good Wifi connection.

The position is really good if you want to see the city.
Penn station is a 5 minutes walk and give you access to the Subway and to the LIRR systems.
Is also near one of the gates of the Highline and on the 9th near Hell's Kitchen (great for food and drinks).
There are also good markets and groceries at walk distance.

The hosts, Vinicio and Michelle, are really nice people.
They have been very responsive to our requests and gave us some suggestion on how spend time while in town.
Michelle even met us before in Dublin, to give us the keys, because we were arriving for Christmas day.

Definetely a good place to spend time in New York