Remove the clutter on counter and window. Too much going on. How about framing out the mirror with a rich dark wood. I'd restain the cabinets a darker wood to pick up the smaller tiles. There are products out there by Rustoleum that allow you to redo counters and cabinets to colors that might work better. A rich dark wood bathroom would be pretty. I'd place some candles near the tub. Sit back and enjoy. Good luck with whatever you decide.

Also have a dual purpose room. We did inexpensive white shelving units around two walls, with fabric boxes to stash stuff, (office, and my "crafty" supplies), threw in a few decorative items. Got a tall basket for rolled up mats/foam roller storage, a complementary lower basket to throw in the requisite elastic bands, small hand weights, etc. Decorated walls with pics from our travels, framed with colored mats.

This is a better picture of the blue half feature wall! And the olive is behind it

How are you going with your project, Shweta? We have a similar problem; a long entrance and a big blank wall. - One or two prints would get lost. - A large one would be disproportionate, and there’d still be lots of empty space. - A gallery could get expensive. - We don’t want family photos. To decorate the whole area, I‘m going to give faux wainscoting a go. I can no longer find the inspirational photo I’m basing it on, but these may give you an idea. I‘ll include a narrow hall table, a plant or two, and the print and mirrors I’ve had custom framed, like this: eg: Or if you don’t want the faux wainscoting (frames), something like this may break up the emptiness. Good luck with your project. :-)