Wouter,
Sailing the Valks would be on my agenda, no question.
Not sure that any description that I could give would do the experience justice.
Before going to the Netherlands we toured around the UK, France,Switzerland Germany, Belgium and Italy. Touring in the Valks visiting ancient towns and cities that have not been ruined by comercialisation may not be for everyone, but for me, it was the highlight of the holiday.
Getting from one city to the next was a real experience with something new to see around every turn.
A case of the journey being equally as enjoyable as the unique destinations.
Regards,
Phill