I think it's much better to take the water off, right? Just my opinion since you're the new owner then it might be good to replace the water with a new one.
I envy your slice of heaven. How I wish I own a cool place such as that! Just a little improvement with the landscape though and you really took good pictures!
Definitely agree with duraleigh. If you keep getting a lot of leaves on your pool better find a good solution and I find covering it a nice option as you don't need to run your vacuum most of the time. It'll save you more time and energy that way.
Cool! Even the landscape is awesome. It's great to see your before and after photos. It inspires owners on how they should build their backyard pool from scratch.