We really enjoyed our stay at Siems Boat. We were welcomed with a fully equipped fridge and a bottle of wine and had a very pleasant stay there. Siems father showed us everything on the boat we needed to know and was very friendly and helpful. The boat is (arriving by car) pretty close to the next park and ride where it just takes you about 10 min to get to centraal station by tram.
Siems boat is absolutely recommendable and we think it's one of the best ways to experience Amsterdam. Thanks a lot to you Siem and say hello to your father!