Mukwonago - depends on whether you're coming directly from Chicago (Milwaukee is a bit out of the way) or will first be in Wisconsin. Nearest Marriotts are in the Brookfield busy suburban area, which is west of Milwaukee but directly on I-94. Can't go wrong with any of those properties, might be able to find a 7500 point Rewards stay. Mukwonago is a small town. Check out The Elegant Farmer for lunch and local produce/bakery/cheese/apples. In fact, go across the road, jump on a hay wagon, grab a basket, and go pick your own apples from the trees. PM me if you want more info on southern/central Wisconsin.