In accordance with a lessee's right to invite to the lessee's dwelling unit such social and business visitors as the lessee wishes, no fee may be charged for overnight visitors or guests occupying a lessee's manufactured home. However, if such overnight visitors or guests so frequently remain overnight for residential purposes so as to increase the number of persons normally living in the unit, the owner or operator of a manufactured home community may revise the rent due to conform to the rent paid by other lessees with a like number of members in their household.
68 P.S. § 398.10