The host accused us scratching his Kitchen Bench Top and asked for $400 compensation.
We reasonably stated our case and insisted it could not be possibly done by us. However since the host and me could not reach any meaningful resolution, we had to go through mediation process of Airbnb.
The outcome is that we do not need to compensate the owner. But we have wasted some energy and time on this issue, especially after the trip has finished.