Near Milwaukee Wisconsin ?

Have you checked Cliffside Park. They are popular on especially weekends and holidays, so may be full, but worth a check (Real Racine online or by phone). Located near the lake and south of Milwaukee, it is easy to get into city.

We drove through Coachman's Terrace recently. Looked like a rather rundown mobile home park with a few rv slots. Though we would have liked staying near Lake Geneva, we did not like ithat park at all and we drove on.