entresol

noun entresols

1. A mezzanine; an intermediate floor in a building, typically resembling a balcony; most often, the floor immediately above the ground floor and below a higher floor. The late lord in autumn filled Castlewood with company, who drank claret till midnight: the present man buries himself in a hut on a Scotch mountain, and passes November in two or three closets in an entresol at Paris, where his amusements are a dinner at a cafe and a box at a little theatre.