How luxurious are fresh hotel sheets? To show your appreciation, and maybe receive an extra mint or shampoo, you should tip the hotel cleaning staff.
The morning after your first night leave 1 or 2 dollars, or the equivalent, on each bed. Each night after your first you should leave 1 dollar on your bed, except the day you check out. You are thanking the staff for the previous night, and ensuring that they will now clean your room very well.