I recommend to stay at Peter and Anna’s flat, if you want to visit Copenhagen. The location is super central, and the flat is quite big for groups of friends. We were 5 people, and had a very nice time at this house.
Peter and Anna would respond immediately to any of my questions, the check in was smooth and they were super kind to have us leave our luggages at the flat for the whole day after we checked out, since we had a late flight.
The flat was clean and cozy, spacious and super convenient to stay for a few days.