Zomerhitte was filmed in Texel island in Netherlands.
Zanddijk 2 (house)
In movie
Scene where Bob develops the photos he made of Kathleen on the beach.
Real
Scene was shot At the height of the dunes, the Muyweg becomes the Zanddijk. When you walk a bit to the left, you will come across 'Bob's house' which is called 'Akiab' in real life.