We stayed at Sofitel Chicago for 4 nights. The hotel is in a nice quiet location, but still a few meters away from North Michigan Avenue. We had room 1109 which had a good view of the John Hancocks Tower.
A number of good restaurants around and also two subway stations. We had a room with two queen size bed and room was big enough for the four of us (2 adults, 2 kids). Concierge and door staff very helpful.
The beds were extraordinarily comfortable.