Felix,
This cave is not the instrument to stay sober. I am getting problems financing my alcoholproblem since I finished this shed. So I started brewing my own beer again. Do consult me whenever you're around. And yes mr. architect, the original trapper cabins didn't have windows; you do know your classics

. I did make a concession between originality and functionality. Windows came from a renovated house in Rotterdam (1930), stove from France, same era. Rocking chair from Indonesia is probably the oldest item, around 1910.
Cheers,
John