@Daryll-And-Nikki0
BAd news I"m afraid in that you can never ever ever get back to the perfection of 5 stars - you're forever relegated to 4.9 ( under the current system anyway which is extremely unlikely to change)
As irritating and unfair as i'm sure that is, in reality, most guests coudlnt' care less about 4.9 vs 5.
Every host is in the same boat and almost everyone has had an unreasonable guest adn an unfair review.
Guests look at what other guests have said, your photos and your price.
It's very unlikley to affect your future bookings.
I do understand how much it riles, but - onwards and upwards, try to put it behind you and look to the next booking....