Two things caught my eye, first that the house was about 600 square feet, the same size of our own stuga.
Second was the quote: “seldom-needed stuff (luggage, winter clothes) is stashed in the higher cabinets. ‛Believe it or not, we have empty cabinets,’ says the owner. ‛There’s space for everything.’”
Our own house is exactly the same way. A combination of lots of IKEA cabinets, and not owning too much to begin with, leave lots of free space!