Four and half stars (I'm a very tough rater).
Perfect location and a must for anybody interested in architecture. This was one of the first modern skyscrapers in the world. Maybe because this was Chicago in January, but the price (I thought) was more than reasonable for being smack-dead in the middle of the Loop. My room was very nice, although the view was nothing to speak of (but this is not a criticism. Every hotel has to have a few rooms without any view, and I opted for a reasonable price over a view). Certain floors (accessible to everyone) have lobby areas which show off the full display of original iron work. A walk down the interior stairs is a must!
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC