CL Type Sites in Holland?

Minifer

Does anyone know of any CL-type small sites in Holland in the area Amsterdam - Arnhem, or on the coast nearby please?  We have ferry booked for late April and need five nights on a site.

Alternatively, is there a website which might be able to help us?

I am aware of the Vekabo website which lists small sites, but unfortunately the one we fancy has not answered either of the emails we sent (first one translated to Dutch) so no joy there.

We do not want a site with more than say 20 pitches, don't need entertainment, pools, restaurants, showers, toilets or any facilities apart from the usual CL type electric hook-up.  An empty field with just us or a few other vans would do very nicely!

Any suggestions welcome please