A very nice and quiet park. Each site has a nice concrete pad for the picnic table. On site ranger is very helpful and gave us the combination to the lock so that we could arrive after hours. We didn't explore any of the park amenities as we were sightseeing in St. Louis.
We've been to this state park several times. Camped a few times with the scouts but first time as a family. They have wooded sites and grassy area sites too. However, I don't believe there is a way to reserve the site that you want. Reservations are handled on a first come first serve basis - all through snail mail. In any case, we had a nice wooded site. Very quiet but that may have been due to the cold temps.