Research Question

Silly question, maybe, but for fic purposes - does anyone know the layout of the Hyperion in Angel Season 4, as to whose room is where and on what floor? I'd hazard a guess most people would be on the second floor, but that's not based on anything but simple reasoning that who'd want to climb more stairs than that... are they all on the same floor, or different ones? End of hall, middle of hall, whose room is next to whose, etc.? Any advice (or even which episodes I should review to find out) would be majorly helpful.