You can't wish for a better location in downtown Chicago
Don't bother renting a car if you're going to stay at this hotel. You can walk to all the main attractions including Lake, art institute Michigan Ave etc. it's also short walk or short taxi ride to literally dozens of good restaurants around and Chicago is a foodies delight. 
The hotel is well run and the staff are very helpful. The building itself is a beautiful old facility that has been carefully upgraded and tastefully finished. Breakfast buffet is a treat in a well lit glass ensconced second floor restaurant with a great selection and lovely views overlooking the Chicago River 
The executive club lounge is a little disappointingly small and the breakfast and unhelpful service there is the only flaw in the hotel. We went to the main breakfast restaurant after this instead This area needs an urgent management review in an otherwise well run and well located property