(ii) Where an ancillary service is provided to a tenant pursuant to a lease or rental agreement separate and apart from the lease or rental agreement for the housing accommodation occupied by the tenant, the tenant shall not be required to renew such lease, or rental agreement, for the ancillary service upon the expiration of such lease or rental agreement.
(iii) Where an ancillary service is provided to a tenant pursuant to a lease or rental agreement for a housing accommodation, whether at a charge separate and apart from the rental of the housing accommodation, or included in the legal regulated rent, the tenant may be required to renew the rental term for the ancillary service upon the renewal of the lease for the housing accommodation. However, where the owner requires a tenant to continue such ancillary service, the owner may not unreasonably withhold consent to the tenant to sublet for the term of each renewal lease, the space or other facility constituting the ancillary service.
(iv) For housing accommodations located in hotels, where telephone switchboard service is not provided or required to be provided pursuant to paragraph (2) of this subdivision, an owner shall not deny a permanent tenant permission to install a private telephone, provided that such installation shall not cause undue economic hardship to the owner, nor shall an owner cause the removal of a pay telephone from the premises.
(4) The base dates for required services shall be:
(i) for housing accommodations subject to the RSL on June 30, 1974, for building-wide and individual dwelling unit services: May 31, 1968;