Stayed in one of Henk's wagons for 3 days with my parents and little sister and I gotta say that the whole experience was just unforgettable. I personally enjoyed my stay in the wagon, surrounded by farm scene and learnt how to milk the sheep. If you are a nature lover and into experiencing new things, I definitely recommend Henk's wagon! The downsides, however - the bathroom is a few walks away outside the wagon and the location is around 30 mins away by bus from Amsterdam Centraal.