Klaus is a nice and friendly host. It was a relaxed environment in an older character inner city apartment /house. A good location near west station and walkable to old city centre (or can catch tram outside the door). Decent food near by too. Area was reasonably quiet. keep window closed if the tram noise worry you. it did not worry me. bed and room is spacious and was comfortable. a supplied cloths drying rack was useful too if u need to hand wash and then dry cloths. only issue was cleanliness of the shared bathroom/toilet could be better. but overall a nice place to stay in vienna city :-)