We needed to pay 60 € but the car whas only slightly dirty.
We have rented the car from you about 10 times. Were always satisfied. This time we had to pay an additional penalty because there was sand on the floor of the car. You have a very beautiful country. Where we like to vacation. And there is sand on the coast, which automatically comes into the car. We didn't know that we had to clean the car before handing it in. A cleaning costs 10 euros. We paid 30 euros as a penalty.