We had a great time staying on Dick's house boat. It's located on the east side of the city, only a 30 minute walk to the central station and near local restaurants and supermarkets. Both Dick and Jet were very welcoming, providing great communication and recommendations. The boat was a good size. Im 6'2" and had no problems with the space unlike some other boats. Dick wasn't joking when he describes the toilet as small; its in a tiny room where you have to duck to squeeze in, but this just adds to the memories and shouldn't put anyone off. We stayed during a cold snap in January and despite ice forming on the canal the main room was warm and cosy; the bedroom did have a bit a of chill however, but nothing to stop us sleeping comfortably.
Overall a great place to stay and experience Amsterdam.