When I used the bathtub on the first day night. I found a lot of black objects and informed the reception to arrange for check a clean up when I leave hotel on next day morning.
When I back hotel at night and use the bathtub again, I found no one to check and clean, it looked like rust. When I checked out on 3rd day and told the reception, they just said sorry, sorry. And I believe they simply ignore the problem and will not take any action to solve the problem, it is very disappointed for me