We have reserved a block of rooms at the Marriott Suites under Disselkoen/Dalasta. Here is your link.
They have kings and doubles, and the price is $75/night.
Transportation
The Marriott has a shuttle and will provide transportation to and from The Grove. Their site says it is $22 from O'hare for a taxi. Anywhere else you want to roam, you're on your own. There is a mall nearby and stores and restaurants around the area also.
We have reserved a block of rooms at the Marriott Suites under Disselkoen/Dalasta. 