I can just recommend you this very unique place in amsterdam!

When we arrived the very friendly owner showed us everything and explained the most important things we have to consider to enjoy the trip perfectly. We had EVERYTHING you need for a uncomplicated and relaxing holidays - and this on a more than 100 year old ship!! Everything inside is in perfect shape and the facility shows how it was build in the past and how it could be out on the sea ;)
We stayed with 5 persons, and there was plenty of space for everyone.
If the weather is fine you can go on deck and relax there a bit or in the park which is nearby.

In total i can just tell everyone that we had a perfect time there! Would recommend it to everyone who thinks of staying there.

And if possible, i would try to visit this great place again! ;-)