Otto is a great host. His flat is wonderfull - the localization is perfect, close to grocery stores, shops, food, and local attractions. It's also well communicated - public transport is just 5 minutes from his place.
House was clean, accessible and well laid out. It was an absolute pleasure, especially that we got som "extras" from Otto. He was very communicative and responsive, especially that we had some issues with phone ;)
I must say - this was one of the best experiences I ever had. I would highly recommend Otto's place.