Ickiest room in which I have stayed has to be a one bedroom villa at BWV. The coffee pot had a coffee filter growing a fungus. The shower had mold and mildew to the point that we we showered without touching the walls- at all. The extra long balcony was so rotten that I insisted that no one lean up against it, for fear of falling. The kitchen sink leaked, and it took almost an act of Congress to get it fixed. Etc., etc....
Even the BC, which I loved, had mildew in the shower.
AKL, POFQ, and PC were probably the cleanest overall rooms.