I've only ever heard/seen garderobe in historical contexts to describe the sanitary facilities or lack thereof in mediaevel castles. IIRC garderobe is said to have started off as gardez robe, i.e., mind your clothes while using the facilities (usually just a hole in the floor of a small room built into the castle wall over the moat). As time went by, this small room developed other uses, mainly as a place to keep clothes, and then into the item of furniture used today. With the passing of time the word also settled down in the modern form of wardrobe.

Bingley

Bingley