That cabling is the kind of temporary that lasts longer than the heater. The pipe from the heater to the toilet is the pressure relief of the heater. To me it looks like a DIY repair in a Soviet summer home, maybe in the Baltics somewhere. Just a random guess. The transparent is probably a glass wall. Why glass? No clue, people are weird. That cow hide was matched to the toilet most likely… The sink is probably a clearance sale item from some luxury looking brand. Got it for cheap or free just needed a use for it :D Well these are just my thoughts but it does evoke some nostalgia in me.