One (1) or more rooms in a dwelling, apartment, hotel or apartment hotel designed for or occupied by one (1) family for living, sleeping, eating and sanitation purposes. A dwelling unit may contain more than one (1) set of kitchen facilities, whether temporary or permanent, provided they are used only by members of the family occupying the dwelling unit or their non-paying guests. A dwelling unit may include up to two (2) persons per unit to whom rooms are rented in addition to a family related by blood, marriage or operation of law, but if the number of such additional persons exceeds two (2) or if they use or are furnished separate cooking facilities, whether temporary or permanent, such additional persons shall be considered a separate dwelling unit. (PZSC § 03-15-044)