I highly recommend Georg's place! The appartment is located on the last floor of a nice building, and is thus very quiet. The appartment was very clean, very well equipped (lots of towels, storage space, washing machine, reliable wifi...), and conveniently located for me (5-10 min to University campus and downtown). The neighborhood is very nice, with a few cafés and restaurants.
Georg couldn't welcome me himself and arranged that his cleaning lady would show me the appartment, which was very nice of her. Georg came in person early in the morning on the day I left, which I really appreciated. He was very warm and welcoming. I would definitely stay there again!