I stayed there a few years ago during the Chicago Blues festival. I stayed in the RV with a friend and had a great time. It's just a large parking lot for semi trucks and they also sell parking for the sports events held nearby. We had no trouble getting a taxi to and from there and we were never hassled. They have security cameras that cover the entire parking area. We found a spot next to the train tracks next to another RV that was there. No hookups but you can get water from a hose near the office. Supposedly there is a subway stop nearby but we never found it.
