You have too much furniture for your size room..I would remove the small tallboy...and put dresser with mirror on wall across from bed.......bed on opposite wall with nightstands.

Unfortunately that’s my husband’s dresser and it’s not possible to remove

Since you need his dresser, can you remove the nightstand on the left and put his chest there? I’ve seen furniture showrooms without the symmetry of two nightstands.

Keep bed in front of window put dresser where tall boy chest is andput tall boy where you have the dresser it will look much better in the middle of that wall with the mirror...add a long drapery rod across entire window wall up close to the ceiling and hang neutral linen drapes..will be a beautiful backdrop keep them light like a neutral linen.

I think I'd move the bed to the long wall, leave both windows open and the tall chest where it is. Then center the dresser on its wall.