We had a great experience in Copenhagen, also thanks to Rikke and her mother. They were really helpful, kind and easygoing.
The appartment is beautiful, on the 5th floor (no lift, just for the information), enough space for the whole family, with a well equipped kitchen and a small secret place for the children. We felt us there at home.
The neighbourhood Norrebro is quiet, clean and very nice, some 20 minutes far from the centre (on the bike). Rikke was very kind and let us use her bike.
There is always something to do with kids in Copenhagen, weather or not...