Christian's flat is very well located in central Copenhagen, there is a bakery and a supermarket 5 min walking from the flat. The metro station is 10 min walking distance and it's only 30 min, door to door, to the airport, with the metro.
It's a very quiet and cosy flat. The perfect place to relax after a long day of walking in the city.
Communication with Christian is very easy/fast and he is very flexible with check in /out time, which make your stay even better.
I highly recommend his place (which is sparkling clean by the way).