Certainly not overexposed on my monitor. I like the view, the processing but the angle of the shot is off putting. I accept it was a difficult shot to get - going by your description - but easily straightened in PS and worth the effort.
Thanks for the offer but I don't believe in editing images that have already been edited, especially low rez jpegs. To edit properly an image like this then the original has to be imported to PS, converted to a smart object and as you have pointed out have room round the edges that can be cropped. You would need to start from the beginning again.
I didn't know you couldn't take a camera inside the Louvre. Oops,Dale