This park has a ton of camping available, particularly if you don't need electricity and have a smaller rig because then you can get into more of the campground loops. (There is electricity here, but there are many more sites without.) 

The sites in the Old Logging Campground were close together but many had vegetation between them offering some privacy. Site 207 was especially tucked in but it's a tight spot, so probably best for a van or tent. 

The park itself has a lot to offer being right on the St. Croix River, plus there are hiking trails, a paved bike path, a fire tower you can climb, an old CCC camp area you can tour, and more. Also, canoe and kayak rentals are available. And this is all within the state park boundary since, at 34,000 acres, the park is the largest in the Minnesota state park system. 

Some of the loops have old bathhouses that desperately need to be replaced, but they are in the process of doing so, which means some loops have great new bathrooms and showers. (If you stay in the upper 200s, sites, you'll have one of these new bathrooms right away, but more are being built.) Cell service was incredibly spotty on Verizon, AT&T, and T-Mobile. Depending on where you're at, you'll get a low signal, but often it was only enough for texting-- don't think about using the web or social media or getting any work done while you're here. 

Overall, we enjoyed our weekend at this park and would come back for another getaway if we had the chance and it wasn't a workday.