M.F.
Our favorite spot when we used to camp was Lake Kegonsa State Park in Stoughton, WI.
http://dnr.wi.gov/org/land/parks/specific/lakekegonsa/cam...
We always had tents but I believe they have sites with electric and water. They have a building with showers and toilets but there are also pit toilets throughout the grounds as well as water fountains. Toilets were always clean, not outhouses. Sites are wooded and you are not on top of the next camper, which is what we liked. I believe we preferred site 16 but it does not have water and electric. We hope to get back there some day soon and introduce our little ones to the wonderful world of camping.