Just got back from 2 nights at the Blackstone. Room was excellent and spacious - marble floors in entry and bathroom, flat screen tv, high end furniture. Really the service is what makes the hotel stand out. You could not walk by any employee without them saying hi to you, holding the door open, etc.
I would highly recommend the hotel if you are planning to go to the museums. It is about a 10-15 minute walk through Grant Park to the Field Museum, Aquarium, and Planetarium, but you cannot get much closer in terms of a hotel. The Art Museum is about a 10 minute walk also the other direction.
If you are taking the train into the city, get off at the Van Buren Station and its an easy walk to the hotel (you can use this same stop to get to the Science Museum). Otherwise parking is $46/night at the hotel or around the corner on Wabash you can overnight for a little under $15 - we didn't go this route but we walked past this cheaper garage on our way back to the hotel one day.










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