What you see here is about 36" wide and 16" deep.
I am nearly dying of anticipation to go to work on this but I can't until all the decisions about the wall paper colors and friezes and dados are made for the entire top half (even the right hand side I haven't made yet).
The lower floor ceiling height is 9 1/2" and the upper or the "attic" is 9", nice and high and sort of comfortable I guess. Our old house had the same ceiling height as Ariel's attic - that is one way to think of it.
Ariel is very late-Victorian, Eastlake-ian. The bathrooms are going to be quite something I can tell you. Maybe I can get ONE done this week.