We thoroughly enjoyed our stay on Derk's houseboat. Very comfortable and homely - and moored in a quiet, picturesque and convenient location. Derk was a perfect host. He gave us a warm welcome and supplied us with all the information we needed. In particular, Derk really went out of his way to help us when an emergency situation which had nothing to do with the accommodation arose - and everything was 'fixed' :-). Thank you very much, Derk! We fully recommend the genuine Amsterdam experience of staying on Derk's houseboat - and will make an extra effort not to create too much 'trouble' when we return one day ;-)