I know that there have been some cheaper prices coming up outside of downtown.......but I just did a Priceline bid for Thursday & Friday night for some other friends who are making the trip. $78 into a 4 star downtown bid hit at the actual team hotel, the Union Station Marriott. With all fees/taxes/etc., ended up being two downtown nights for $196.
Felt pretty good about that, and didn't expect any reasonable downtown avails. Cheapest downtown hotel that was not a Priceline bid and was 3-star or higher was a Sheraton showing at 129 + taxes/etc.