The overall experience in staying at Christian's apartment was phenomenal! He was away when we arrived late in the evening but he graciously and quickly made an alternative arrangement to let us in the apartment building and give us the key. He regularly checked in on us to make sure we were doing fine and responded in a timely manner to any question we had. The apartment itself was also beautiful - very tidy and clean. There are several nice cafes, restaurants and bars in the neighborhood so you won't have a hard time finding a good spot to have good meals and drinks. You will enjoy taking a walk or jogging along the river which is literally right beside his apartment. Note that it could take up to 10 min to the closest station depending on how fast you walk and luggage you carry. His apartment is on the 3rd floor if you are curious.