I think there's another upstairs area that's not used, but I'm not sure how you get up there. Possibly through this door opposite Bedroom 2?
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This is about how much I managed of mapping the front view
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The front door comes in at an angle to the stars (so I'm guessing has a porch/entrance area), the jacuzzi windows match the far right;
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and that bit slops up to accommodate the penthouse "attic", the den has three banks of three windows you can just about make out but after that I can't understand what's going on. Next to the dining room is the kitchen area and it looks like the start of the glassed in veranda we see on the listing
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but that
should be where Bedroom 1's windows open out onto. I guess maybe the windows open onto the veranda? But then I'm still a bit unsure where the vanity and bathroom come in, since the door to Bedroom 3 is flush to Bedroom 1.
However the floorplan works there's obviously a reasonable part of the building we can't see, including The Cell and The Lab (Bitchtank is Bedroom 3).