We thoroughly enjoyed the stay at Karen's apartment. The location was perfect, very hip and vibrant, close to lots of great restaurants and convenience stores. There was excellent links to travel, with the central station just ten minutes walk away.
Karen was a wonderful host and gave us some excellent suggestions of what to see and where to eat during our stay. We found the apartment to be very spacious and comfortable with everything you needed. The little balcony was delightful in the sunshine and almost romantic at night.
All in all we thought it was good value for money in Copenhagen and I would highly recommend it.
The only watch out would be for anyone who has trouble climbing stairs as it is on the top floor (which does mean great views over the city).