Do you use the space to watch TV? What does the sofa face? Can you post a pic?

Sofa too light color too shiny & too big. I. Think a darker brown wicker bench would work nicely. I think the wall would be perfect without guitar.

Bed facing TV in the wall. Love the photo idea.

Take the guitar off the wall, and the light scones ( if they can be removed) get a cool lamp instead and a different table in front of the sofa might work.

I would do a bench instead of the sofaand maybe a nice upholstered headboard in a natural linen instead of the picture and guitar.

Oh and remove some of the throw pillows form the bed. The room color is very appealing.

Remove the guitar and the picture over the bed and just let the focus be that lovely aqua wall. Replace your linens with white, or solid neutral colors - just use pattern in the pillows. Replace the sofa with an upholstered bench and get rid of the rolling table.

Try removing the table & painting the walls one uniform color, remove the items off the wall

Now if you like to lounge over there maybe you should do a less clunky loveseat with narrow arms and legs showing

Ok, the guitar is out! This is great advice. Thanks to all!

First , as a decorator I need to discuss with you what has to stay and what can go. I don't like the table in front of the sofa, or the shiny sofa. If money were no object(of course it always is) I would recover the sofa in fabric or replace it with one covered in a complimentary fabric. If I assume you have almost no budget, here is what I think you need to do. Take the guitar off the wall and otherwise eliminate as much contrast as possible. Paint the rest of the room the pretty aqua on the bed wall.
Get rid of the excess pillows off the bed. Assuming the white sofa stays, I would put a neat white spread on the bed and cover the pillows ina subtle fabric that has the wood color,aqua and some white in it. The wood tones in the room will look much better with the aqua wall color than the white. Lowering the contrast of the wood furniture with the white wall will do a lot to eliminate the "cluttered" look. If the little table on wheels has to stay, I'd throw a cloth made out of the fabric chosen for the pillows over it. Good luck!

The biggest problem is the sofa. Too big for the space. Can we see the rest of the room? Maybe it could be moved elsewhere within the room.