What is a fancy word for an attic?

A fancy word for an attic is garret, which is elegant literary term for habitable attic or small room at top of house, often used in classic literature to describe artist's attic studio. Another fancy word is loft, which sounds more upscale especially when referring to converted attic living space, as in loft apartment. Mansard is related fancy architectural term referring to attic space under mansard roof. Penthouse can be fancy term for top floor attic like space, though technically different. Belvedere is fancy term for rooftop structure that can include attic. For very upscale, you might use atelier if attic is artist studio, or observatory if attic has views. Garret is most traditional fancy synonym, evoking charming old European attic with sloped ceilings and character. In real estate marketing, fancy terms include bonus room, sky room, or crow's nest for attic space. So if you want fancy word, garret or loft are best choices, with garret being more literary and loft more modern upscale.