The 85 sq. m (914 sq. ft.) house has 21 individual floor plates arranged at different levels above the ground. The plumbing facilities are located in the thick wall at the rear of the building. Whenever the owners want some privacy, they simply draw the curtains to hide from the outer world.
I don't find the bathroom and the toilets.
however...
'Whenever the owners want some privacy, they simply draw the curtains to hide from the outer world.'
ah, now they have sex again