What a lovely concept! Reminds me of my childhood. We'd stay in a campground all summer long right beside a river. There were 3 of us girls and we would canoe or float down that river, packing food and drink, all day long. Absolute bliss!
This seems like both a financial and ecological nightmare...the amount of water and product used, the maintenance...this really seems like another China project where they don't think further than 5 years.
An ecological nightmare is usually someone lecturing others about the environment while still driving a car and having kids adding to the population and resource pressure.
Guessing if it's hot springs it's not needing chlorine, if it's next to the ocean it's probably salt water and it doesn't need chlorine, cool space though, with similar to the intercoastal in Florida possibly