Kilian's house is in the center of the city, near most of the distinctive places of Berlin, for example: Branderburger Tor, Friedrichstraße,... I loved his flat. It was charming and comfortable.
As to Kilian, he was so friendly and we had the chance to go out with him to take some beers and we talked with him in a relaxed way.
Without a doubt I will return to his house whenever I get the opportunity.