We stay at this park often as our daughter lives in Leander. The park is always clean, and the staff always friendly. The park is not far from shopping and a park/ride if you want visit Austin. There is a nice playground for the kids, and like all KOAs now a doggy park, as well. I feel their rates are a bit high, but it is very conveniently located.
This park is overall quite pleasant. Our one complaint was the noise and prevents me from giving it a 10. The park seems to be on the flight path of small aircraft, there is a train track nearby and I-35 is close and carries an incredible amount of truck traffic at all hours. As long as you are buttoned up, the noise is not too bad for sleeping unless you are a light sleeper.
Not a bad place for a short stay. Other than hookups, there are NO amenities. The sites are fairly level. No idea often it is mowed, but it could have used it when we were there. There are no restroom or shower facilities. Campground uses a self check-in process and reservations are informal when you call, no card info taken. I cannot imagine this campground ever being full enough to worry.