We stayed at the Peterson bridge as part of a kayak trip down the pine river. The tent sites near the river have pit toilets and a water pump available. Up near the camper sites there are flushing toilets and bathrooms with sinks but no showers. During our stay a bear wandered through the camp.
I can’t speak into much about the RV campsite but they looked nice; they had concrete slabs to park on.
We loved staying at Tahquamenon Falls State Park hiking along the river between the falls was great and it was total worth the extra few dollars to rent a boat and row out to the island. The bathrooms and showers where very clean. Each campsite seemed large enough to stay away from your neighbors.
As we part of a two night backpack trip we stayed at crooked lake. The site we stayed at was close to the lake and had a clear path to walk from the site to the lake (which made a great place for dinner). Unfortunately when we stayed the water pump was unavailable, fortunately the camp staff had a 5gal water cooler available (and we pumped and filtered water out of the lake). The pit toilets were very clean and trash cans had been managed well.
We hiked into the blind lake campground and stayed one night. The campsites were very clean and the put toilets were clean. We really appreciated having a water pump near our campsite.