I asked Stefan if it was possible to have a drawing of the interior dimensions. We're getting closer to detailed decisions on fixtures, especially in the bathroom, and all of my plans have been based on estimations with a ruler.
Within a day, his colleague Johan sent the attached drawing, along with a nice note that he was reading my blog, too. So hello, Johan, and thanks for the quick work!
The main bedroom is 3.1 by 3 meters, or almost exactly 100 square feet. The second is a touch smaller at 96, and the bathroom is a cozy 55 square feet. (The whole house is 627 square feet, and the deck an additional 466).