This, I think, is important. Both the renter and the landlord have to write a review before both reviews appear on the website. And the review content of the other party is not known to you until you post your own. So, basically, we know when the renter is "problematic" - has a lot of complaints, is constantly unhappy etc. We generally don't leave a review for such person. This is probably not the best approach from an ethical point of view, but yes - we do not want to know what this "problematic" guest may write about us.