I am a Dane, and it is true that the word hygge is hard to translate. I think it has to do with the long, dark winter months here, and how we gather inside for social activities or just cozy time in the couch. BTW, it is ironic in a country obsessed with anti smoking regulation, that the inside sooth particles from candles in the winter can exceed traffic fumes from busy roads outside.. Hygge is that important! :-)