What I am finding by experience is that when a picture is planned to be looked at upside down, it is much better to compose it upfront for that purpose, rather than just reverting it after the shot and seeing what it looks like.
In this picture, I like the way the reflected house is ported by the “real” rocks, and I also like the curved sand ceiling that frames the image.
Yes - this is a lovely result. I find that if you bend over upside down and take the image from between your feet you get an idea of how it's going to look and then you don't have to invert it. And it's easier to do than crouching down really low!! LOL :)