I really enjoyed the opportunity to make an impact on the company. The business was rather small, and so I felt like the work I accomplished actually mattered. Also, the city of Chicago is just so cool.
What I wish was different
I wish there had been more interns besides myself at the company. It's quite difficult to make true friends with people who are 20+ years older than you.
Advice
I would say: be prepared to be scrappy, to not get hurt by criticism, and continuously look to improve yourself.