I am very happy with it, I want less, they do not have - hence enough space. Also always nice when you come back from Baden - the place of the next already visible. One notices only when rolling that it is moist under the surface, what the "ceiling" then therefore not allowed to pass. A little care you should of course already deal with it (avoid sharp stones, etc.), but this is already a matter of course.
All in all I would say that the ceiling at this price aboslut served its purpose.