This place is stunningly huge. There can be 2-3 giant conventions going on at the same time and there's still plenty of room. The one problem is that there's not a lot of useful public transportation nearby -- except for a couple of bus routes (but even those don't run to the The Loop on non-commute hours. And The El stops over in Chinatown.
Pros: It's just, plain big
Cons: Hard to get to