Investors & landlords

So last question.  This is a 3 bedroom house, I have a master with its own bathroom.  The renters have access to the entirety of the house except for my bedroom.  They have shelves in the laundry room, their own 2 bathrooms I don't use and shelves in the pantry and fridge and a portion of the garage.  I provide all cookware and dishes, cleaning products and detergents.  

 

The 20-25% for their bedrooms/bathrooms seems low given their use of the common areas and dining rooms.  Am I doing that right?