That’s a reflection of woman standing in the middle of the steps of L’Arena. The puddle is in the middle of the bottom area of the arena, on top of a wooden platform. (In the original photo, you can see where the puddle is, in front of the big red fencing). Again, this is a separate photo of the puddle that I took with the intention of “flipping” for effect.
And the photo has been turned upside down. Of course. 😉