During our stay we mostly met with Ralf and he was the PERFECT host! We had perfect care, Ralf was really kind and helpful, we had good conversations with him. We had an absolutely own space, but of course we could always turn to him for help and advices. The detailed description and photos of the room are 100% precise. Welcome message on the door, fresh tulips on the table and in the bathroom, the room is really lovely. We highly recommend to spend at least some days by them, this was our BEST accomodation during our travels so far. In case we visit Rotterdam in the future, it is sure that we would like to stay at their house again. :)