Hagen came with a big group of friends and stay in our 5 apartments. So, we will talk about our experience with the group (16 people) and not only of Hagen. They arrive at 20:30 and 3 member of the group were already drunk. They told us they would behave but we had complaints from our neighbour of the building. According to him, they kept ringuing at his door bell in the middle of the night and did some noise. We know that big groups are dificult to control but we were very explicit about the house rules they failed (in a part) to follow. I have nothing against Mr. Hagen (it seemed one of the most responsible of the hole group) but unfortunatly we cannot recommend this group to other hosts.