The following words, when used in this article, shall have the meanings ascribed to them in this section, except where the context clearly indicates or requires a different meaning:
A person or persons who has the use of real estate of another as a dwelling unit and is responsible for the giving of any type of consideration therefor, including any house, apartment or other dwelling unit designated for the use of one or more persons as a place of abode, but excluding those who are lessees for a period of less than 30 days.
Any person who grants, leases or otherwise permits others the use of three or more dwelling units for a consideration, monetary or otherwise.
Any natural person, partnership, association, firm or corporation.