What if the guest left positive comments but only left 3 stars that means your place looks bad? Even one person who leave 3 or less stars will pull down the average. I think the stars need to go from 1-10 to make it more nuanced and fair. With 5 stars the gap is too large and your percentage drop will hurt a lot.
I had one guest who gave me 3 and 4 stars even they wrote a very positive review. They said the 3 stars was a misake but as a principle they never give max stars which means even my place is perfect i will only get 80%. If we had 10 stars I would have gotten 90%. Or even better let people give from 0-100%.
I hosted a lot of people but if this star rating make my bookings go down or reduce my earnings then I am going to delist my 2 properties.