Unique but VERY small rooms...
Staying at the Hudson is quite an experience. It’s a chic place with its dark ambiance and flute music playing on every floor but understand that if you get a regular room it is going to be small, even by New York standards. My room was smaller than a cruise ship cabin and those are usually small. It was big enough for the queen bed and not much else. The bathroom was about the size of an airplane lavatory. Space is limited in New York and the Hudson has done its best to maximize its space. 
It seems the hotel gets its hip identity based on the overall ambiance which makes up for the tiny rooms. Plus going to New York should not be about the time you spend in the hotel. The beds are very comfortable, the rooms have HD TV’s attached to the walls, and the bathrooms are clean and well stocked.
The bar area is fun at night. Breakfast is an experience. Most hotels make their breakfast areas bright and airy but the Hudson’s is more like eating in the dungeon of a Harry Potter film. It’s very dark and quiet and you eat at thick wooden tables – some long tables with big kings chairs like out of a renaissance film.
Overall it’s a fun experience but I felt much more at home the next night when I arrived at the Marriott.