Choustník,

Suberbe endroit Dix Mille fois mieux que le camping Tabor de Knizeci rybnik

In the summer you'll burn away on the hilltop (unless you have ac). A alternative for small vans and a bit more shaded, continue on the small road through the fields and take the old tarmac road down on the other side of the hill. There you'll find a small parking (A bit off but managable for a night). Small river at the bottom of the track.