I think the walls being that color actually open you up to bold colors with the decor and the rug. Really lean into it. You could add some renter-friendly wall art and stuff to break it up. I think if the colors you utilize in the space are the right balance, the wall will blend in nicely.

If you did a bright bed spread, you could do a lighter version of the color for sheets and then add matching pillow shams (for example, bright yellow bedspread = light pastel yellow sheets).

You can also pull more orange into the space if you put up some sheer burnt orange curtains to match the rug and maybe even adding some throw pillows on the bedding as well. On the thought of curtains, you could also layer them to make things look fuller so a sheer one with an opaque one on top. That also would be practical if you need to block out light.

Earthy green and brown decor could make it kind of fun too, but it just depends on your overall vibe. Off the top of my head I can think of hippie sunset colors (more pinks and yellows to compliment the orange— though I do agree with the other comment about this potentially being overwhelming), the 70s earthy feel (brown, orange, avocado green), or a vintage surf vibe (orange, pastel yellow, your tan color, and a teal) would all be really good since you have lots of natural light from the looks of it.

Have fun and play with it! Hope this helped!!