I once saw underwear on the bed of a hotel room I had just checked into, and suddenly out came a person from the bathroom in a state of absolute undress.
Out the door I went, luggage still in tow ...... all while apologizing for intruding and explaining the misunderstanding.
When I later ran into the same guest in the hall (fully dressed) -- some would say the person was quite the eye candy regardless of accoutrements -- there was no scene, but quite the friendly hello instead of a nasty glare.
I wonder if that Melia Hotel ever took the initiative to compensate the guest who was intruded upon, complaint or not.