Asking for a $60 Fee just to Clean the Dishes?

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I was staying at an Airbnb in New Zealand. The place was good and the host seemed very nice. The problems started to occur when we checked out. We ran out of time (we were travelling far away that day) so we didn’t wash the dishes for our breakfast. It was kind of messy in the kitchen but we didn’t break anything and we reported the right number of people for check in.

After we left, the host got angry and wanted me to pay $60. I just don’t get it: in the house rules, they stated the fees only applied when we smoked, not for the dishes. I’m confused: can someone tell me what should I do? Other Airbnb properties seemed fine when we left the house with dishes unwashed. Should I reject or accept the request? Please help me understand.