Possible Clues:

• Room for an artist
• A mess of dust before ten for work
• Artist's room
• Workroom
• Apartment without a separate bedroom
• Artist's place
• Place to rehearse
• Leaders shaking things up for old Penny at Number 10 in front of the camera technically
• Bookish American must leave — that's flat!
• Where one might want to create a picture of the drawing room