Yep, this is a hostel... on a ship. More information about them on www.ecohostel.be
In 2015 Billy & Alex visited their friend Bué and they painted some walls in the city. And in the end, they also created some characters on this ship. To see these, you have to be on the Groendreef-side from the canal, the ship is coasted on the Bargiekaai.