Hi
What if Airbnb gave the guests a warning when they are about to mark 4 or less than 4 star for the price, informing that they will not be able to book the same accommodation again?
Why giving a warning? There are some guests that say the accommodation is good, has great location but mark 3 or 4 stars for the price.
If the guest can not gladly afford the accommodation, Airbnb in a future should offer the guest cheaper accommodations instead of suggesting that the property owner should lower its prices.