We have stayed at the Box House numerous times and love it. The location is good for us because it is close to my family, but this time we were spending 5 days at the Javits Center and the complimentary ride or walk to the 7 train and 4 stops later we were right at the show.
The room was very spacious: high ceilings, separate living area and bed alcove. There was a full kitchen so we could make a good breakfast each morning, with a very nice new grocery store down the block. It was very clean and nicely decorated—a loft-like space. Also a small gym and restaurant on site. It can be slightly noisy from the bridge outside, but really minor noise for New York.