My wife and I travel to Chicago frequently for concerts and shows, and decided to try this hotel. The room is really nice: comfortable and well-designed. The pillows weren't great, but that's not too uncommon. But come night, sleep was very difficult. Even though we were on the 12th floor, the street noise kept me awake until 5am: constant horns, motorcycles, and fire sirens (a fire station is about 50 yards away). Clearly, better windows are needed! None of the other Chicago hotels I frequent have had this problem.
Come morning, the free breakfast, especially the warm foods, was one of the worst I've had. To be honest, I was a bit embarrassed, because the tables around us were filled with Europeans visiting Chicago, and even low-end properties in Europe (including those owned by Marriott) provide an amazing breakfast buffett with a wide variety of pastries and freshly cooked foods. Why do we put up with this? I wasn't surprised by the number of plates full of food that I saw thrown away. After trying to eat, we just left and got breakfast elsewhere. (The coffee, however, was not too bad, if you want one positive note on the experience.)