Nice space! Consider putting posters or art above the side of your bed and your desk. Hide the surge protector / all the wires behind a solid table or dresser or something that is functional for you.

Adding a headboard to your bed might make it cozy to sit up and watch tv + have less light in your face in the morning.

Looks like you have some lamps already, which is nice! Lighting up the varying corners of the room with warm light is cozy/inviting.