Roulotte - "Roulotte" is the French word for caravan. In my mind Roulottes are a bit like a mix between a Vardo and a Bauwagen. They have the Bauwagen shape but with more decorative exteriors like Vardos.
Versions of Bohemian Style have been with us since the late century. The gypsy culture and the Bloomsbury group active in the early century have been influences on this style sometimes referred to as Boho Chic.