Try not to obsess over the 5 stars. My very first guest gave me low marks so right out of the gate I couldn't get 5 stars for a long time. Also, simply reply to their less than stellar reviews with something like, "We are sorry you did not find our home and hospitality satisfactory. We strive to provide each guest with a wonderful experience. We will review our processes based on your comments. Happy travels." --- Or something like that. But don't give up.
---> That's how I look at most guests, like cousins. And you know, some of those cousins are kooks.