Should have thought through my name more carefully, AA does indeed have dubious connotations. It has been shortened to Auld by other posters, but that just makes me feel ancient.
I did feel momentarily better on reading your post. Atrium is pretty good.
Then I recalled that my mother also calls the room off her kitchen a scullery. But fortunately no scullery maid in it. Nor butler in the pantry, sad to say. Think what she calls a scullery would now be known as a utility room.