The Hilton in Chicago charges $3/day for luggage storage. Only hotel in Chicago that I know of that does this and I've stayed at most Marriott, Hilton, and Hyatt hotels in the Loop/River North/Streeterville area. I was irritated when I stayed because I had 3 straight weeks booked and usually leave a bag behind for the weekend when traveling home. Changed my stays to another hotel nearby that didn't charge the stupid fee. So they lost $2k-$3k in revenue over a potential $36 fee.