What rights do tenent/landlord have in share-rental situation
Situation: Landlord owns a 3 bedroom townhome. Landlord has entered into 3 separate rental agreements, with 3 different tenants, each of whom rent one of the bedrooms with shared access to remaining common areas (kitchen, living room, garage, etc).
Landlord has stated that when one or more of the rented rooms is without tenant, (s)he has the right to use or assign usage of the open bedroom as (s)he see's fit, including overnight stays by landlord or landlord's assignee's.
Question: What are the rights of the landlord/tenants regarding to entry into and/or usage of both the unoccupied rooms and common area's in this type of rental situation?