We like the feeling of being deep into the alps here, despite only being 9km from civilisation (aka Bovec). This campsite is both spacious (2 terraces) and well equipped (broadband, sauna, cable TV). There are lots of barbeque places for cooking and benches and tables for eating. Of course it also sits on the Soča river bank, and has a bridge for breathtaking views. Rooms are also available.
Camping €6 per person, apartments €50.