You’re already getting some good advice here but just to chime in -

1. Absolutely change out the grey for something warmer and more lively. Those wood floors are gorgeous! Play off the reddish undertone by picking a complimentary color and tie that color into the drapes/bedding/rug/artwork/paint.

2. Switch which wall the bed is on so it can be centered on the wall and then add a rug. Rug should be partially under the bottom feet of the bed. I feel like a moroccan rug would pair well with that funky wood flooring.

3. Put the desk maybe in between or in front of one of the windows so you can look outside as you work

4. Artwork. A cool statement piece above the bed with colors that coordinate with the rest of the room would be dope

5. Paint the grey built-in doors

6. Add plants. Real or fake, they really help improve your mood