As told in a previous post the area of Vesterbro in Copenhagen has seen some major changes in the last 10 or 15 years. What was old workers area blocks with one or two bedroom apartments, a lot of social housing and run-down buildings have been changed into an area that is, if not exactly up-scale then at least middle class with larger apartments fit for modern families. It's still an area with its share of problems but it's not the worst in Copenhagen anymore. When the old apartments were converted to bigger ones some of the staircases went obsolete like this one. They have kept the old painted sign of Coal, Charcoal and Firewood, perhaps because this was the old entrance to the coal cellar, where this was stored. Remember that before central heating each apartment or even each room had its own wood-burning stove.