We had a great stay in Copenhagen. Part of that was the great appartement...
The flat is located very well, so we could do everything by foot. We were 6 adults and had more then enough space. Big point is the really nice and cozy kitchen.
I can not tell very much about Christina herself, because we had the apartment for our own, but what was great is that she gave a lot infos beforehand (included favorite spots, restaurants, etc.) so that we quickly could find everything we needed in the area around the flat.
For sure a recommendation!