My favorite image of the challenge. The boxiness is subtle, a supporting framework that enhances the upper mirage of a garden in the sky. The colors are lovely. There's an expansive feeling that elates.
I'm not seeing how it's a "boxy composition" but... the challenge topic is definitely open to almost anything, and I do love those off and on again reflections!
Nice shot. I like how the cropping is aligned with the window at the bottom right. The rotation (or mirroring?) of the picture gives a confusing and disoriented effect