Good idea but unfortunately unusable, no space or the passage is blocked and the outlet of the gray water is not possible. It's a shame but it's really a misconception...

This place is a cheek. permanent sound from the motorway and from the air (Zurich). Do we need something like this? There is no alternative for an overnight stay on the way south in this area

it works fine with a little flexibility. however, it is not the optimal solution.