Bathroom facilities. Each lodging house shall provide at least one
flush water closet, lavatory basin and bathtub or shower, properly
connected to an approved water and sewer system and in good working
condition, for each seven persons or fraction thereof residing therein,
including members of the operator's family wherever they share
the use of said facilities, except that the required number of bathtubs
or showers may be reduced by the Zoning Board of Appeals for lodging
houses utilizing gang bathrooms containing multiple bathtubs or showers.
All such facilities shall be accessible from a common hall or passageway.
Basement bathroom facilities shall not be considered as fulfilling
this requirement. Every lavatory basin and bathtub or shower shall
be supplied with hot water at all times.