I drove thru years ago. It seemed hot and humid with lots of brush and a small swimming area. But I might be misremembering. If you go, post up what you think about it.
It's allright.. if you like to stare at plants... but they had a cool fort thing there build by the Core (?) of engineers.. its pretty neat if you get a tour.. but that was about it
Fun place for a kayak/canoe on the little lake they have there. I've been many times but mostly short stops on my trips between SA and Houston. On of my favorite places to take a break or kill half a day when I'm on the road.