The appartment was very cosy, clean and well equipped. The location is good (5-10 minutes walk from the Nørrebro metro/train station; bus stop right outside the house from which you can get to Frederiksberg). Even if we didn't meet in person Andreas is a very reactive and accommodating host, he provided a foldable mattress so my girlfriend could spend one night there at no extra cost.
The couch is big and comfortable. I can definitely recommend this place to stay in Copenhagen for a few days.