I think it is the dresser that is extra and taking up all the room. My daughter had a (built in) wardrobe that had the hanging space on the top and the drawers on the bottom. They were very deep and I’m sure anything in the back was never used.
She didn’t have much more room than that, but it was a double with two of everything, and the double desk built into the window space, so couldn’t be moved… They lofted the beds and put the fridge under it.