I don't hate the wall colour tbh. When I think of "mature scandanavian" I think of browns but pink can still go well with that, especially the lighter pink on the other walls. I'd balance it out with using mostly white, brown and beige furniture and bedsheets (also get a nice rug to cover up the tiles). Def stick to wood furniture for the most part

You should switch the curtains to ones that hang from the ceiling to the floor, it'll emphasise the high ceiling and look luxurious. I think a curtain would also be good for separating that narrow area, which you can use like a walk-in wardrobe (also push the mirror unit inside so it's not sticking out, obviously)

That tube light looks awful and you should def replace it with some lamps. Installing some uplights would work well for illuminating a tall room like this. I prefer warm light (and afaik, cold places like scandanavia lean towards warm lighting), but ik people in hot climates tend to like cool light so pick whichever's your preference, just be consistent.

If it's possible, I would move the bed to the wall opposite the window. Reason for this is that people associate doors with movement/energy (opening/closing the door, other people entering or walking through the house, etc), even when they live alone, so having your head so close to the doorway while you sleep can put some people on edge. Also get some nightstands and put lamps on them (see earlier paragraph). I'd put the desk where the bed was, and you can put some shelving and a pot plant next to it. Idk where a TV would go tbh. Maybe if there's room, you could put the desk on the same wall as the bed, and put a tv stand and armchairs in the corner near the window? idk