Great location, walking distance from Kongens Nytorv which is walking distance from the place (and you can take it right at the airport, so... very convenient)! Walking distance to every hot spot in Copenhagen and right where all the restaurants and tours are.
The location is the best of the apartment, it was built in 1770 and is in the 4th floor. So, if you do not mind about the stairs, and updates required in the bathroom, it will be a great place for a young couple.