Communication with Dea and her husband was easy and fast via email and SMS (we did not meet personally). There was a nice welcome (plus recommendations for sight seeing) in the apartment, and everything was as described and shown on the pictures. The apartment itself is very nice, bright and stylish, and everything was very clean. WLAN and sound system worked perfectly. I would recommend the apartment for up to 6 adults, plus kids, so it fits perfectly for larger families (or 2 families), and groups (I was there in a group of 5). My only slightly negative comment would be that to sleep on an air bed with 2 people, you better be a couple... Linen and enough towels were provided.
The area (Norrebro) is great and about 10 min. by bike or 20 min. by bus from the city center - the bus stop (5A) is just 100m away. There are several cafes (for breakfast), restaurants and beer bars in the close neighborhood, as well as supermarkets.
So, to sum it up, it was a perfect weekend in a great, very friendly and laid back city, staying in the perfect place - thanks again!
PS: I would absolutely recommend to rent bikes in Copenhagen - the easiest and fastest way to travel the city!