Lost Falls campground is a true hidden treasure. Overall, it has quite a lot to offer; we've swam in the river, played on the beach (with and without dogs), stargazed, fished, hiked to Lost Falls itself, and been on some amazing kayaking/float trips back to camp. And that was just a small group of adults using the rustic sites in the lower portion. The upper portion of the campground has more to offer for those with small children or looking for electric sites including several nice-looking cabins overlooking the river. But for us, the peaceful, shady, well-maintained, rustic spots on the Black River are really the best reasons to go. We've been here four times now and the owners and staff were always very friendly, relaxed and helpful.
I've done a good amount of camping and Lost Falls is among my favorite places. If you're unsure of this place, I encourage you to give it a chance.