I figure it's about time to get a hotels thread going.
This is where the Chicago crew will be staying this year:
http://www.comfortsuites.com/hotel-columbus-ohio-OH182
We've stayed here the past two years, and it's a great place. Price isn't bad either.
There are at least 4 or 5 other hotels at that exit, which is Hilliard-Rome Road off of I-70 (Exits 91 A & B). The drive from there to the expo center is roughly about 10-15 minutes, and parking is plentiful and relatively cheap downtown. Besides the hotels, there is a 24-hour Meijer and a big Wal-Mart at the exit, as well as about a dozen different fast-food places/chain restaurants.