Mezzanines are those wonderful spaces found in the wasted parts of tall rooms. My small Paris pied-à-terre has one- bedroom and bathroom- one of my very dear friends has climbed to her mezzanine sleeping nest with a wonderful little ladder, a cozy hideaway, tucked away under the beams, from which she can see the roofs of Paris and her terrasse/jardin when she wakes up in the morning- heaven!
"In architecture, a mezzanine or entresol is an intermediate floor between main floors of a building, and therefore typically not counted among the overall floors of a building. Often, a mezzanine is low-ceilinged and projects in the form of a balcony. The term is also used for the lowest balcony in a theater, or for the first few rows of seats in that balcony."- wikepedia
Sometimes the space is minuscule, in height as well as in size. Just a place to sleep. Other times whole rooms are up there, not hidden behind walls, evident to all. A rail of some sort protects the inhabitants from a nasty crash at midnight snack time, but sometimes there is nothing at all and one better be careful. Mezzanines are hideaways, added rooms both charming and convenient, they can be a passage "galerie" to another room or even a library high up on a balcony.
the sleeping lofts