Except as otherwise noted in this Section, every dwelling unit shall contain within its walls in safe and sanitary working condition:
A. A toilet located in a room that is separate from the habitable rooms and that allows privacy;
B. A lavatory basin; and
C. A bathtub or shower located in a room that allows privacy.
In hotels and apartment houses where private toilets, lavatories, or baths are not provided, there shall be on each floor at least one toilet, one lavatory, and one bathtub or shower each provided at the rate of one for every twelve residents or fraction of twelve residents. Required toilets, bathtubs, and showers shall be in a room, or rooms, that allow privacy.