Its funny the different perspective people have. While the owner is a little unusual, I actually love this because he keeps ANYBODY who is misbehaving on a tight leash. It means I can always go with my small children and know that we will not be bombarded with inconsiderate swimmers. Nothing worse when trying to get kids happy in water for a teenage boy who is trying to impress his friends with a huge bomb to ruin it for everyone.
The setting is magical and a wonderful breath of fresh air.
I suppose if you accept his rules of no bad behaviour then you wont have any problem.