Wonderful stay at The Ritz-Carlton!
My fiance and I stayed at The Ritz-Carlton Chicago (A Four Seasons Hotel) 4/20/12 - 4/22/12. The trip was both for business and pleasure. My fiance had a couple of trade shows he wanted to attend and we were also celebrating my birthday. Part of my "gift" was our stay at The Ritz-Carlton and what a nice gift. We found it to be absolutely beautiful. We had a room with a great view. Christine from the front desk knew we were celebrating my birthday and she sent a nice little surprise to our room. Upon returning from dinner there was a bottle of champagne and a chocolate treat with a note saying Happy Birthday. This was such a thoughtful and quite unexpected surprise.
The fitness center at the hotel was phenomenal!! The locker rooms were the nicest I have ever seen, even compared to private fitness centers.
We felt the hotel was in a great location. John Hancock center was across the street and just a short walk to Navy Pier. The typical Chicago wind was a bit chilly but not unbearable for us. 
We had a great stay in Chicago and at The Ritz-Carlton (A Four Seasons Hotel)