...but we did find a campsite =) by accident we found a campsite leaded by scouts in golden bay.
We just drove there and tried our luck. And we were lucky. First the scout (some Bulgarian guy) checked us out by asking things like "hmm, these days it's difficult to get a place here. Large groups on the weekends, you know. By the way, where are you from? Czech? Ah oh Germany...Yeah..let's see“ and suddenly he was trying to get us some space.^^
And then we slowly got it: that campsite usually was for large scout groups, meaning the size of the places is for roundabout 100 people each (we got one on our own), you get keys for your personal toilet and shower and they have large areas for scout activities and sports. All in all 12€ per night, at the heart of golden bay, with a bus stop in front of our door =) check!