mansionette

Etymology
From. .

Noun

 * 1)  A large and somewhat luxurious house.
 * 2)  A flat that spans two or more floors, and often has its own entrance (i.e. not off a communal hallway).
 * 1)  A flat that spans two or more floors, and often has its own entrance (i.e. not off a communal hallway).
 * 1)  A flat that spans two or more floors, and often has its own entrance (i.e. not off a communal hallway).