I did my PhD and post doc research on hygge, the Danish concept for everyday togetherness and well-being. I have done ethnographic PhD research the cultural basis of hygge in conceptions of home, togetherness and family life. Including how it influences the consumption of leisure, hospitality, food and drinks.
I see hygge as the comfortable and straightforward experience of being present and being welcomed, just as one is. It is usually a social experience, but does not have to be. A more detailed definition can be found here.
In 2011 a chapter from my dissertation was published that became the first international, scientific article to appear on the topic of hygge. See that, as well as various essays and talks on hygge here.