This is a great place to stay for visiting Amsterdam, only 6 stops to Central Station by tram taking only a few minutes. Staying on a floating house was certainly a new experience for us. We weren't sure what to expect but there was no need to worry as it is very like a normal house and we didn't detect any movement at all. Peter looked after us very well, was very flexible when our train to Amsterdam was delayed by over an hour, and took a lot of time to show us round and tell us how everything worked.
The top floor is pretty much self-contained - there are private bathroom facilities and a fridge and he has also thoughtfully provided some crockery, cutlery, tea, coffee and a kettle, so you can easily take along a few breakfast provisions and do your own.