Great location and staff are extremely helpful!
My wife and I stayed there for 3 nights. The location is excellent on 5th, right near the Empire State Building.
Rooms are very small, and I mean very small. You will literally have to live out of your case as there isn't anywhere to unpack. You can just about walk around your bed!
In saying that, the staff are really helpful and moved us to the biggest room in the hotel ( which is probably the size of your bedroom at home ) and they couldn't do enough for us.
You get what you pay for with Hotel 373 and to be honest, who wants a huge, pricey hotel when there is so much to see in New York?!!