What a cute little white room - and so fucntional too. A lot of starter home in Scandinavia are really small, so they need to come up with space-saving solutions which still look good too. White colour of course is a good started, since it makes the space look brighter and larger.
Folding furniture, multi-functional pieces with storage capability and movable items such as trolleys on wheels are great for modifying the space based on different needs, and wall space can operate both as a storage area and fun-looking artistic displaya. If you got plenty of room height you should try to free up as much floor space as possible, and utilise the wall as a storage area using different heights - placing less needed items higher.
Consistent colour scheme and style also help to create a calm and stylish room as you shouldn't have to give up on style just because you don't have plenty of space!