The wear-off is quite audible. While sleeping in bed, I heard occasional water drops in the bathroom and footsteps from the upstairs guests.
Moreover, we want to warn other guests: when driving out of the garage, please use the left hand side if your car is tall, and use the right hand side if your car is not tall.
We learned this through a hard lesson. The garage exit is followed by a downward slope; there is an unnoticeable pavement depression on the left hand side, and the ground to ceiling distance is short on the right hand side. When we drove out of the garage exit from the left hand side, the bottom of our car was scraped and damaged, even though we drove very slowly and carefully.
We communicated the issue to the hotel manager and suggested a warning sign put at the exit. The manager explained that a warning sign may help avoid the pavement depression, but cars carrying a kayak once hit the garage ceiling when using the other side of the pavement. Finally, the manager emphasized that the hotel has been run in this way for twenty years and the car damage is our fault.
We would argue against the manager here. Just like furniture can wear off and harm a guest, pavement can wear off and damage the guest's car. The hotel is responsible for maintaining parking facilities just like maintaining furniture. If the pavement was designed as such, then you should put a warning sign!