While doing internship at Institut fot (X), my first task was to build a small living spaces for me and my colleague. We used a left space in the attic, that was already used by other inhabitans and build two rooms (8,5 square meters each), for its appearence called "cocoons". In order to bring sunlight and expanding the usable space under the slope roof, we afterwards built dormer windows.
Cut for dormer window
Attic shared space