there is a nice hotel right across from the wisconsin harley in oconomowoc if i didnt already live in oconomowoc, that is where id stay. 20 min or so from downtown yet still in the party scene as some events are at wisconsin harley. id let anyone camp in my yard as i have an acre and a half, or rent a room for the week too.
Small world. My brother in law is from Oconomowoc.
Plenty hotels are available closest ones are pricey look 50 miles away and you can save bunch save even more if stay in Illinois Wisconsin border towns.