Real estate agents report that "hidden WCs" (water closets) add psychological value. Buyers perceive a bathroom with a hidden toilet as larger and cleaner because the offensive geometry of the bowl is removed from the center of the room.
| Challenge | Consequence | |-----------|--------------| | Low cleaning frequency | Because staff do not know the HZT exists, it may go uncleaned for months. | | Poor ventilation | Hidden zones often lack external wall access, leading to odor buildup and mold. | | Emergency unresponsiveness | A user who falls or becomes ill inside an HZT may not be found for hours or days. | | Lack of supplies | No regular restocking of toilet paper, soap, or hand sanitizer. | hidden zone toilet