What's up with all these toilets?

Much of the PoE environments are inspired of ancient Rome. I like that.
However, I really wonder what went through the minds of the design team when thye decided it was a great idea to just add lots and lots of toilets in places like the Bathhouse or the Labyrinth. Like, you need to take a dump before fighting Izaro?

That's just how the random area generator works. It's possible for a Haunted Mansion instance to be nothing but hallways and courtyards or have at least ten studies, just like Bathhouse/Conservatory instances can spawn rows and rows of toilets or generate with almost nothing but pools.