Top Location, Comfort and Service
I have stayed here several times, both with family and alone. I have always been treated with the utmost courtesy. Service is paramount from the housekeeping staff to the engineers who fix little glitches in the room (which are very rare) to the front desk and doormen. Rooms are relaxing; beds are the best I've slept in. 
In October we were there with our family for the Chicago Marathon and had no dinner reservation for our group of 6, including 2 small children. The Lounge managed to fit us in and serve us with total professionalism and fun as well. They were life-savers.
I've stayed in many Chicago hotels. There are many that are cheaper but the location, comfort and service make this my top choice for every visit to the Windy City.