@Trish139 Sorry you arrived to a horrible, not-as-advertised place. But that all the bad reviews had been edited out is highly unlikely. It's like pulling teeth to get Airbnb to remove a review full of lies, reviews by guests who write terrible reviews simply because they got called out for sneaking in extra guests, or simply because the reviews were bad.
One host, who also uses Airbnb as a guest wrote of a similar experience to yours- she cancelled right away and found out that what had happened was that the place was actually recently sold, the old host, who earned the good reviews foolishly turned over her whole account to the new owner, who was obviously clueless about keeping up the standards that the reviews reflected.
Sometimes a host might have new cleaners, or a new property manager who's totally slacking, unbeknowst to the host.
It would be unusual for a horrible, not-accurate place to have any good reviews at all, and certainly not all good reviews and no bad ones, so there is likely another explanation for that, rather than all the bad ones being edited out or all previous guests being dishonest.