I haven't met Gerd in person, instead with his neighbour Martin who was very kind and welcoming. He showed me the place and how it works and offered his help for whatever I'd need. Communication with Gerd was friendly and dynamic. The place is very nice, I loved to lay down on the sofa and plan my next day. I've cooked nice meals for myself and had good night sleeps. Perfect! It is located close to public transportation stops and to the beautiful Belvedere Palace. Surely I'll book it again in my next stays in the city. I couldn't find the wine opener, though. That was the only thing I would pin on the wall as "things to improve". ;)