Classy Joint on the Gold Coast
Waldorf/Astoria (now part of the Hilton Group) took over management of this hotel about 5 months ago. Previously it was the Elysian Hotel, which is the name we needed to use for the cab drivers to find it. It is perfectly located just off Rush Street near the north end of Michigan Avenue. While it is on the pricey side as you expect, the facility and service live up to the expectations you have from the Waldorf Brand. 
Unlike their other properties--and a nod to the previous ownership--the hotel style is on the "moderne" side, with minimalistic decor in the lobby and modern furnishings throughout (Some of which still bear the Elysian nameplate). Having said that, it is still very, very elegant, tasteful, and worthy of the name. The rooms are generous, secure, clean,and very well appointed. But what stands out is the service. Just as in the very best of restaurants, the service was there when you needed it, and invisible when you didn't. I don't know how they did it, but everyone, from the doorman to the concierge, called me by name. Cabs appeared like magic, doors opened, chambermaid service was perfect. The only disappointment--couldn't get a spa appointment on short notice, but that was my fault for not planning ahead. There is really nothing I can stay critically about our stay and will definitely go back next time I am in Chicago. 
Finally,one nice touch which I wish other high end hotles would adopt: There is no tipping or expectation of tipping, and the hotel does not charge for nickle-and-dime extras like internet access.