Can you please add a confirmation box for guests if they attempt to leave an Overall rating that is less than the ratings they give for categories?
I just had a guest who left 4 & 5 stars for all the categories for their stay, but accidentally selected 3 stars for the Overall rating.
If the system asked "are you sure you want issue 3 stars?" it would improve the accuracy of your ratings.
Hosts shouldn't get dinged for accidental reviews.