In the north of Holland (near Amsterdam and the sea). is a lovely caravan and tent for rent. 2 weeks (22 juli - 4 aug.)
3 bikes, 2 children bikes. and bike car. 4 sleeping places. (2 in the caravan, 2 in the tent).
it's a protected nature area. Cars are forbidden. You can make wonderfull walks and bike rides.
the place call camping geversduin and is about 20 minutes from Amsterdam.