I have been camping at Chain O' Lakes State Park for as long as I can remember and it has always been enjoyable. They have a dozen different playgrounds for the kids, and great trails that will make for a great walk/bike ride. The staff is friendly, and they have a store right inside the park with everything you might have forgotten when packing for the trip, all at reasonable prices. And most important (for those of us that aren't lucky enough to have showers/bathrooms in our campers, at least), the bathrooms are cleaned at least twice a day and if one is closed for cleaning there is another one right down the street. Even the outhouses are pretty clean, so if you don't want to go too far, you don't have to. This campground is great. It has a lot of family activities--canoeing, horseback riding, fishing, etc.
My camping experience at Lake Louise Campground was the worst I have had in 18 years of camping. The main reason for that is that the bathrooms/showers were absolutely disgusting. The bathrooms nearest to our campsite were not cleaned the entire weekend (the huge wad of toilet paper that was lying in the puddle in the middle of the bathroom floor on the day I arrived was still there on the day I left, which tells me that they completely neglect the maintenance of their bathrooms and shower houses). They smelled terrible--I have been in outhouses that disgusted me less than the bathrooms in this campground. Then to have to pay to take a shower in them? Yes, it's only a quarter, but if I am going to have to pay to maintain my cleanliness for the weekend then I would appreciate them maintaining the cleanliness of their shower houses for me. To a lesser concern, the sand/dirt paths inside the campgrounds made for a big mess when it started to rain, and it would have been much more convenient for the entire park to have pavement instead of just the part with the pool and the lake.