The houseboat is great!
We were 13 people and missed nothing. You can use everything there. From the hobbyroom with table-tennis and airhockey to the kitchen, which is equipped enough to cook for 13 persons.
The boat is big enough to spend a lot of time there. We had a rainy day, but on the boat it was just funny!
Communication with Jens was very easy.
When we met on the boat at the first day, he was completely relaxed.