It's true, every medieval lot needs this shower.
When G-Knee of the Plumb Bob Keep released this shower for TS2 I thought it was pure genius, it ticks all kinds of boxes so I'm pretty thrilled to have it for TS4. As you can see from the main picture above it's meant to sit through a wall and it will overhang on the other side, but that's ok because that's where the cork is to refill it (if that was actually possible-it'd love it to be so). It's tuned so it can't be upgraded.
Find G-Knee's Shower HERE
Credits: G-Knee, simPE, Sims 4 Studio, Blender