Last year, I had a troublesome guest and said I would never host her again in the review process. She recently requested a stay at my property again. (I live in a small town, and she has family here). I didn't respond to her request. It upset me that she could request the first place since I told Airbnb I would not host her again. Anyway, long story short, because I didn't respond, the dates remained blocked. When I unblocked them, I got penalized for a cancelation. I really hate how unfair Airbnb can be to hosts.