I stayed at Lone's apartment for 5 nights and had a great time.
The apartment is very spacious (esp. for CPH), clean, well decorated and cosy. It's a calm neighborhood with a grocery (Netto) just across the street and opened 24/7 which was very practical.
The apartment is in Norrebro which is a bit away from the center if you want to walk, but take a bike or take bus 66 and you'll be there in 10m.
Overall I had a great stay and would recommend this place.