A mixed bag
Location - pretty good, walking distance from central Chicago and close to Millenium Park. 
Rooms - if you get one on floors 9-14, then great - recently renovated and very smart. If you don't get a renovated room, then really you are left with outdated decor, showers with hardly any pressure and frankly all a bit manky. 
Staff - a very mixed bag. Compliments to Stephanie, who was patient and helpful, and Jadine, who had to spend ages helping us with our issue - my husband left his phone in the taxi that brought us to the hotel. Jadine did her very best to sort this out for us, but the rest of the front desk - well, honestly! We left an envelope with a tip for a taxi driver who was kindly bringing the phone into the hotel for us, and Jadine told all of the front desk staff about this, but TWICE he turned up at the front desk and was told they knew nothing about it.