Underwhelming. Find somewhere-else if you are looking for a proper hotel
We stayed in the meatpacking district hotel for 3 nights in May 2012. Our stay was distinctly underwhelming - over-priced and lacking in customer service. 
The hotel's primary concern is not its customers but the young crowds that pitch up from dusk to go up to the rooftop bar. You have to queue up with them and show your room card before you can get into the hotel.
During our stay the hotel's restaurant was closed for renovation. Breakfast in your room was obligatory as was the 22% additional tax/delivery charge. To have two coffees in your room cost nearly US$30. 
One night I tried to reserve a table in the roof top bar for supper. I made it clear that I was guest of the hotel but was told by the bar manager that they could only reserve a table if we committed to buy a US$175 bottle of champagne. We went else-where. 
Lastly, it transpires that the hotel did not merely "authorise" our credit card when we checked in; they actually took the money off it to the tune of US$ 2000.00. A fact which was never communicated to us. We paid the final bill using a different bank card and it was only when our credit card was rejected because we were "over our limit" that we realised that Gansevoort had single-handedly helped themselves to another US$ 2000.00 or so. We went back to complain. Standard procedure we were told. The excess funds would be returned back within 5 business days. 
We won't be staying in another Hotel Gansevoort again.