At an architectural salvage place here in Baltimore, there is a gigantic marble shower, complete with about 6 showerheads. That's what this reminded me of (but on a slightly smaller scale). It's grandiose and dramatic and amazing.
knee wall detail for around toilet. I like this detail because it creates a nice alcove inside the shower for for the bench (not finishes)
I like this too. It looks good (but not the finishes, as you point out!)