You’re pretty lucky if you have a large enough window in your bathroom that could use a seating area right beneath it. A bathroom reno featured on Beneath My Heart uses an upholstered loveseat bench with added accent pillows for the window area. How about a built-in? This vanity featured on Home Bunch has a bench area near the window, while this other example (also from Home Bunch) creates a window seat out of a bathroom storage unit. You could also try a bathroom storage unit on a much larger scale with a bench as well, like the third option below from BHG. Built-ins are great, but they’re not for everyone. You could try a simple wicker bench with an elegant cushion to place by your bathroom window, like the one below featured on House of Turquoise.
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.