B.S.
LOL...Michigan does have mosquito's, but I've never been to a campground swarmed with mosquito's and I've camped a lot in my life!
I'm not really familiar with many campgrounds south of me because we mostly go north. But my advice would be to check out the state campgrounds. In my opinion most are kept very clean, have great restrooms and are nice.
At this website you can search the map then look for what they have to offer. For the best beach type campgrounds, your better off looking at the ones near the edge of the state near our great lakes.
http://michigan.gov/dnr/0,1607,7-153-10365---,00.html