This was a broom cupboard.

What am I doing in a broom cupboard?

"ACHOO!" she sneezed as a wick of dust reached her nose. Oh yes, she was here to clean it. This place wasn't exactly her pick. Random choices. Almost all the places in the castle seemed to need a bit of cleaning done.

"Vacavus!" She tapped her wand on the cleaner. The dust near the suction end rose up. "Uh-oh" The place was really dusty.

She pushed the cleaner and started to clean the dingy place. She trained the cleaner on the corners, the edges where it was most dusty. There was fair amount of pressure given to the cleaner. The minute particles were sucked into the cleaner. The cleaning went on....

Few minutes later, choosing a spot she'd cleaned to perfection, she sat down. Resting time.