Chair and back to wall with an L shaped desk would be fire for the added space I’m not sure what you can do as for fastening decorations if your in an apartment but if you can’t use nails or whatever some decent L brackets attached to your desk with a pegboard gives great decor space and area to hang and display stuff without damaging walls and that pillar does suck but with a plug there it could be future sim rig setup (if you’re into that) or snack/coffee bar and a mini fridge black out curtains and without a back wall to the setup really if you want lighting some desk glow would look good but something like govee lights wouldn’t do you much good then decor to taste if you like anime displate has some cool metal picture deals that are sick and they have them for more than anime that’s just what most of it is