In Hyperion, the character Martin Silenus is rich enough that he lives in a novelty palace where all the rooms are connected by teleporters. As a joke, the bathroom is a wallless raft on an ocean world.
Outside of the realm of science fiction, my sister followed a TV show for a while that was basically a set of advertisements for a modular home company. One episode featured the installation of a small home on a remote British island; the shower was a pipe outside the house itself.
We installed an outdoor shower at our house. There's nothing as nice as a cold shower outdoors on a really hot day. It feels so luxurious that I can pretend I'm a rich person instead of lower- to mid-middle class.
We once stayed in a beach house with an outdoor shower in South Africa. One morning I got up, took a shower (without my glasses, I am very short sighted) and went in for breakfast. About 20 minutes later my sister-in-law comes running into the house shouting that "there is a huge snake in the outside shower"
Outside of the realm of science fiction, my sister followed a TV show for a while that was basically a set of advertisements for a modular home company. One episode featured the installation of a small home on a remote British island; the shower was a pipe outside the house itself.