I usually park at the Carbarn next to the Hilton. It is covered parking for $10.00 a day but you can print a coupon from their website for a $2.00 per day. They have a free shuttle, dry cleaning, car service, fax machine, etc. www.aceparking.com

I was also told that the Hilton next door has a deal for one night stay and 7 days of parking for $150.00.

Good Luck