Hi shinae, keeping things simple and de-cluttered is the key to smaller spaces. You can add bits of color to accessorize and consider furniture that serve multi-function such as dining table as office desk. Check out the following ideabooks. https://www.houzz.com/magazine/ideabook-911-how-can-i-make-my-living-room-seem-bigger-stsetivw-vs~209321 https://www.houzz.com/magazine/6-ways-to-magically-enhance-your-small-space-stsetivw-vs~165912

Especially with the amber-colored glass at the top of the window, orange and pink would be nice for this room.

I think I would start with the furniture, in terms of space, given that you said it was not a large room. I would check sizing of the furniture and room, to see what would work with the bed, a couch, the wardrobe and any other furniture that you'll be using in the room. From there, I think I would start with the bedding possibly as a starting point for the color scheme. Perhaps you could find bedding with a print you like in the colors that you like, and take from there, the colors for the rest of the room. As well as a sofa bed, another option might be a daybed that could also do double duty as a bed or seating. I think painting the furniture a bring pink would work well against the white. And then take it from there with whatever you've decided to do in terms of the overall color scheme with pink/white/silver/black or pink/orange and white for the walls, perhaps something like a gray as well with the second color combo. Good luck!

It's refreshing to see nautical, navy BLUE. Everyone is saying the same thing for the most part - just introduce another color, definitely bright (yellow or orange IMO) and it will make it more current. What I really like is how your style will withstand the test of time - and with minor updates now and then it will always look fresh and "current".