Multiple Dwelling Law, article 1, 4 (8) (a) provides that a class A dwelling is "a multiple dwelling that is occupied for permanent residence purposes," and includes in such class, inter alia, tenements, apartment houses, studio apartments, duplex apartments, and kitchenette apartments. Such provision mandates that "a class A multiple dwelling shall only be used for permanent residence purposes" and provides that "for the purposes of this definition, 'permanent residence purposes' shall consist of occupancy of a dwelling unit by the same natural person or family for thirty consecutive days or more and a person or family so occupying a dwelling unit shall be referred to herein as the permanent occupants of such dwelling unit." (Multiple Dwelling Law 4 8 a.) Multiple Dwelling Law 304 provides that any violation of the Multiple Dwelling Law constitutes a misdemeanor.