I have met Klaus only several minutes, he welcomed, show me my room and stuff in. The room was clean, roomy with nice big map of Berlin and a lot of postcards from visitors - I like it :) I have to recommend this room, it is on Frankfurt Alle, max. 5 min by foot from this S-bahn, U-bahn station, so nice place to start your exploring of Berlin.
When you need clean, nice room, for single or two in center of Berlin, I can highly recommend. I hope that next time I will have more time to meet Klaus :)