The coverage and wash ability are unmatched!

Semi gloss on interior trim unless its not in good shape or plain jane and I dont want it to stand out, and on the walls the lowest washable sheen.

Get washable slip covers if you can.

Paint with washable paint so tenants can use a magic eraser to wash the walls.  

(B) Mail order custom size permanent washable filters?

And they're washable!

Accordingly, at the Tenant’s sole cost, risk, and expense, the Tenant herewith agrees to be responsible for replacement of the air filter (or, cleaning if the filter is a “reusable” or “washable” type of air filter) not less than every six months from the commencement date of the tenancy.

Wallpaper can last a long time, a lot of it is washable.

Flat paint is not washable so only use it on smooth wall in high end applications.I tend to not like wood floors to stand out like a turd in a punch bowl.

On the paint, use exterior semi-gloss on all window sills, a washable sheen like interior satin in living and bedrooms.