I've located my Chicago shooting space near McCormick Place in the South Loop -- minutes from downtown, easy to get to from the Interstate, at 2255 South Michigan Ave.  Floor to ceiling windows, 2000sf of production space that's set up nicely for long shoots or quick jobs.  Freight elevator, kitchen, wireless, pretty much everything I need.  Not too far from my Chicago and Midwest rep, Lisa Button, at 2138 W. Schiller St.