Camped here a long time ago, so this is my recollection.  First get your reservations as they are a must.  This place is close to Austin, so it gets crowded.  The water here is fun and pretty, great flat hikes over pitted and scoured rocks.  Snapping turtles in the water. Camp sites are nice, flat dirt with plenty of big oaks all around, fire pits, tables, and lantern holders provided.  Nice spacing and all kinds of rigs can fit in here.  I don’t recall that they have hookups.   Bird watching is great here.  All around a great state park.  Reason for four stars:  the park is being surrounded, literally, by urban development, and when hiking on the trails you often can come right up to it.  So the tranquility of the area is impacted.  Come here for a bit of nature, with easy access to services.  Don’t expect to be out in the middle of nowhere.  We came with a 35 foot fifth wheel and loved our site.  Would definitely come again if in the area.