We stayed at Frederik's apartment for 3 days, and Although our flight to Copenhagen arrived (~10PM) outside Frederik's keys exchange procedure hours (8AM - 8PM), he still found a way to make sure we will receive the key to his place.
Frederik was available to us for any question we had with in a few hours.
the apartment location is at the heart of Copenhagen, a few minutes walk from all of the city sightseeing places. on the other side, due to the apartment central location, the noise was a bit annoying when we left the window open to get some fresh air.