text: The data in OSM is correct (once we remove your duplicate node 3640476486). We can do nothing here, the display depends on the application/renderer. You can check e.g. in OsmAnd app (for Android or iOS) that the "Dom europskej unie" does show on that building, when you zoom in enough. That app allows much more closer zoom so that there is enough space to render the label.
  
  Or maybe if you know the exact location of the Norwegian embassy and move its node there, some space could be freed for the building name.