OOps. Sorry for bothering you. But the house is somewhere between the dragon spires building and the church with the outside spiral staircase. I just looked it up on the map. I don't remember how we walked, but that's the area.
Louise, couldn't find an email for you. Thanks for stopping by. The blue doors are in central Cope. We stayed at the Savoy, not far from the Tivoli. Walked past the Tivoli, crossed a square with a fountain with sea creatures, turned right and headed toward the building with the dragon-tail spire (stock exchange?). The blue doors were somewhere between that square and the dragons. Does that help?
It would be so neat to see the door in another season!
Am planning on returning to Denmark in 2010, but I'll be coming from Scotland and will likely stay in the west part of your country. Not sure if we'll make it back to Copenhagen. In any case, if I make it Denmark, I'll let you know.