We stayed a week in a class C. Full hookups. Clean and well maintained bathhouse and grounds. Some sites are directly on the lake. Plenty of room between sites. Did not feel crowded even though the park was close to full. The best part is a paved path that goes around the lake, or you can bike into the awesome historic town of Cedar Falls, which has restaurants, shops, and bars. The path to downtown is about 2 miles (one way).
Lovely area - clean sites - trains roll through at 2 am and 6 am...