Located in a great location within the South Loop and easily accessible to the rest of the city. Plenty of bikes available to get around Chicago, and a short walk to the Field Museum. Check-in and check-out were both extremely easy, and Charlie was incredibly responsive throughout the whole process.
As other people have mentioned, this location is right next to train tracks that run throughout the night. It can get quite loud, even with ear plugs. I was still able to sleep, but just be aware of this before you book.