We had a very pleasant stay in Lone's house. The appartement is spacious, comfortable and light and close to the city center. The metro is only 5 min. walk and you can hire bikes opposite the street, which I would recommend since Kopenhagen is a great city to cycle!
The appartement is on the 4th floor and there is no elevator. You have to walk 8 stairs. For us no problem, but it might be for elder visitors or families with young children.