I come to Copenhagen quite often, and I stayed in a lot of airbnb's, in differant areas of the city. This was definitely one of the best experiences I had.
Camilla's apartment is so pleasant and cozy. It has every thing you need, it's very clean and tidy.
Most of the time I was alone there, so it was so quiet (it was also very quiet when she was there, actually).
The area of Østerbro is also one of the most beautiful, pleasant, quiet and safe areas in the city. But very very close and reachable to all the main sites, by train (10 minutes walk from the apartment), or by bus (even a shorter walking distance).
I recommend warmly!