all the plumbing in my house is mounted backwards/incorrectly so setting literally any faucet in the house to pour cold water makes it pour hot water and vice versa, the shower is basically select choices of 'freezing cold, hotter than a thousand suns, and just right but it screams like the souls of the damned are powering your house', et cetera.
there is a space for a second shower in the house however we can't use it because there is no drain(????).
also the toilet has a tiny hole in the bottom of the tank that appears to be intentionally drilled in there(but doesn't have a mount for any kind of piping or anything) so whenever you flush it drips on the floor.