Here is the Floorplan of the Chapter House.  Click on the image to view a larger version.

Basement ("Rat")
rooms: Basement, Laundry, Room #1

First Floor
rooms: A, B, C, Kitchen
Dining, Foyer, Common, Gloria

Second Floor
rooms: D, E, F, G, H 

Third Floor
rooms: I, J, K, L, M