We had a wonderful time in Copenhagen and in Steffens place.
The house is pretty nice, with a lot of cute details and the typical cool scandinavian style. The house is a little bit outside of the city centre, located in a quite family area, but close to the metro station & shops. It has a small garden, which we used for a BBQ at the first evening.
We didn't met Steffen personally, but the contact was nice and easy and he always answered my question within few minutes.
We would definitely recommend to stay here!
Thanks again for everything.