We had a great time on Daan's houseboat. The place is very nice and with a walk of a few minutes you can reach everything you need. City center, supermarket, tram, even to the centraal station it is only around 15-20 minutes by foot.
The boat is in a good shape. It was apleasure to sit on the roof terrace in the evening.
I would definetly recommend to stay at Daan's boat, if it is available.