We definitely liked our stay in Amsterdam on Derk's houseboat! It was great experience. Derk was very nice and hospitable, he advised us some nice local cafes and bars. The boat itself is very cosy and comfortable. It is located on quite canal so you won't be disturbed by crowds of tourists and could have some privacy, but if you want to go to some central streets it takes about 5-10 minutes by foot. We enjoyed our weekend in Amsterdam very much thanks to Derk and his beautiful boat.