Everything was great. We stayed just for two nights at Oskars place and it was a pleasure to stay at his apartment. Perfect for a group of 4 people, very clean and cosy, just like it is shown on the pictures. The communication was also very good, he replied very fast. The apartment is a little bit far from the city center, but you can use the Taxify app with which you can reach the center very cheap and easy. It takes you around 10 minutes with the taxicab to get to the old town und costs around 4.
All together it was a great time and we would highly recommend.