Response from Derek:
I would have thought a guest so fastidious about neatness would have cleaned up after himself better? He and his girlfriend left chips on the floor in their room that I had to vacuum after I left, as well as crumbs and tomato slices on the kitchen.
I admit I did scream in the kitchen while getting dressed the next morning- long story, but it was not something I plan on repeating. (I never saw Yannick to explain.)