Delightful, comfortable stay!
We really enjoyed our deluxe King room at On the Ave - it was pristine, even if some of the furniture had seen slightly better day, the temperature control was excellent, the shower terrific, the bed extremely comfortable, etc. Ask for a room at the back until the construction across the street is completed - we'd been warned about this, and it was absolutely quiet where we were. The lobby is well-appointed and a comfortable place to catch your breath between adventures. The staff was extremely friendly and accommodating.
The location is one of the best parts of the hotel - it's a wonderful neighborhood filled with lovely restaurants, casual eateries, interesting stores, and in walking distance of Lincoln Center, the Natural History Museum, Central Park, The Metropolitan, The Beacon Theater, Symphony Space and Columbus Circle. The Broadway subway is there two blocks away and there are easy bus routes, as well. My one caveat is skip Serafina, the restaurant physically attached to the hotel - there are much, much better options in the neighborhood.