We stayed here for 3 nights in July 15.
Preben's apartment is superb - high quality Danish design furniture, a wonderful Sonos sound system and spotlessly clean.
Location is fabulous, just a few minutes walk to Nyhavn where there are great restaurants and bars.
Preben gave us a good intro to the apartment. A nice thing was that the apartment really felt like ours with virtually no sign of the owners stuff (clothes in cupboards, etc) just a few useful things in the kitchen.
Just be conscious of the fact that it's on the 4th floor with no lift.
We'd be delighted to stay here again if ever we are back in Copenhagen