I love staying at the Langham when I'm in Chicago. Location is great; hotel services are lovely; rooms are updated and comfortable.
I did have one small problem this time, though. I stayed in a club-level king room, and for some reason, I was able to hear everything happening in 1 or more of the rooms around me. I'm not sure if it was coming from upstairs or next door, but neighboring patrons were having a conversation at 1:30 a.m. on Saturday morning, and I immediately lamented my lack of earplugs. While I remedied that issue for my Saturday night of sleep, I really shouldn't have to rely on earplugs to help me not hear my neighbor's convo in a 5 star hotel. This hasn't been an issue when I've stayed on other floors of this hotel, so I'll be sure to ask for something other than club level for future stays.
The Chuan Spa is amazing, and I highly recommend making time for at least 1 service while you visit the Langham.