Sorry for leading everyone astray with the title 'Landa Park', which has no camping as you have figured out. I should have made sure that I used the real name, 'Landa
RV & Campground'. Before I posted the question I visited their website and found the details. It is located right downtown, next to the railroad track, but is on the Comal River and a tube will float right to Schlitterbahn.
Was mainly curious if anyone in the Wild Texas world had stayed there and might be able to fill us in on what it was like.