There’s nothing quite like an old weathered wooden bench to add some character to almost any bathroom, even if the rest of the room isn’t exactly rustic at all. The State of Things shows a semi-rustic style in this farmhouse bathroom, which obviously works quite well, followed by this more modern and minimalist bathroom featured on Atelierul Decor.
Apartment Therapy shows a really interesting bathroom design where a bench on an outer wall extends right through the glass into the walk-in shower. Another great and simple example of a shower with a bench (again from Carla Aston) makes use of wood material for both the bench and flooring. You may not have a ton of room for a full-sized bench, so a corner built-in might work instead. This one featured on Angie’s List looks great in this smaller shower! Another from BHG highlights the top of the bench with white.