The Headmistress scoffed, then stepped into the next room, the group of curious Eighth Years following closely behind.  Years ago, the room had four bland walls and held a three headed dog guarding a trap door.  The room Hermione stepped into was nothing like that, and clearly had use of expansion charms and magical modifications, because this room was circular, with archways on opposite sides of the room that led off elsewhere.  Closest to the door and off to the left were a couple couches and chairs, in warm browns or muted blues and greens.  All of the House colors could be seen throughout the room but in similar muted tones.