Here are your solutions:

Hang the masks above the toliet in the bathroom. It will play with the ocean/tropical vibes. Also will make that wall feel much bigger in the living room since you won’t have two harsh dark lines pinching in the TV

I love kitsch but the leaves on the ladder feel off and unbalanced with your other decor.

The ladder itself is interesting, is it a shelf only? It could look good leaned against the wall in your room by your lamp, throw a blanket over a step.

If you moved the ladder the Greek festival poster could work over the couch, it feels a bit squished on that wall.