“Many small bed-and-breakfasts are just a spare room in someone’s house.”
And maybe that “someone” is also trying to bring up children in that house - trying to teach them right from wrong, moral from immoral, etc.
Oh so true ... but that’s not the point. (Or at least not my point.) I believe that a landlord can’t refuse to rent on the basis of color, etc., but if someone is advertising for a roommate, they can’t be forced to accept someone they don’t want, even if their reason is racist, because it’s their personal living situation. I should think a dinky little b&b, where the host lives intimately under the same roof with the guests, would be analogous.