User blog comment:YazzyDream/THIS IS DRIVING ME MAD/@comment-3232514-20121010203222

Okay, so looking it over, I agree that the fireplace and stairs are flipped in the floor room, especially since all the outside shots show a chimney to the right of the side entrance, and the Museum entrance is also to the right, so theres no way that configuation works if the hallway goes behind the living room as depicted in Double Dipper. Given that Little Dipper seems to move things into a more logical position (at least as far as I can tell behind the mirrors), this is how I see the layout of the 1st floor of the Mystery Shack. This is not to scale, obviously, just a rough guess.

Museum section is just my guess based upon where the entrance is and the other door in the floor room. There is however a space where I've label Stan's Office/Bedroom, but we haven't seen any of it, not even that side of the hallway, so I'm just guessing based on praticallity. The door at the top of the Gift shop is an oddity, since it's suppost to go to the museum, but that's impossible, unless it goes up to the second floor and then back down. Maybe the route passed throught the wax museum? Other wise the gift shop and the museum aren't connected (unless you go through the living room).

The Parlor, Wax Figure Storage room and bathroom with tub are all on the second floor. The hallway to the storage room is different from the first floor hall way, the window and doorway in parlor can't position it anywhere on the first floor (unless its on the back side of the fireplace in the floor room, but there's no window there on exterior shots), and the bathroom with the tub has a window, which the washroom on the first floor can't have, and it would make more sense to put the second bathroom on the second floor. I'm guessing there's a crawl way with roof access above the gift shop, but all the rooms are above the museum and living area.

Dipper and Mabel's bedroom is up in the attic/third floor, in the space over the museum.