Generally speaking, this is a great campground. Pretty good privacy from neighboring campsites, but about 1/3 have direct exposure to campsites directly across the road/loop. If this is a concern, take this into consideration and consult the campground map before making a reservation.
Be aware: there are NO shower facilities on-site - if you don't have an RV/camper, be prepared to go elsewhere for basic hygienic needs. There are basic toilets, however (but no sink or shower).
The hiking (interpretive) trails are beautiful and highly recommended. Great views and access to the St. Croix River Valley (and the river itself).
Be aware: there are many miles of trails for both hiking and biking in Gov. Knowles State Forest, but most of the trails specifically in the southern St. Croix family campground itself prohibit bikes.
Aside from the aforementioned, great experience: beautiful and relaxing - would go again, keeping all of the above in mind