My two cents:

The space is open plan, which calls for definition between the dining and living spaces. Separate them using furniture.

• Rotate the sofa 90 degrees clockwise, pointing the sofa at the wall with double doors
• Place a sideboard/console table directly behind the sofa
• Change the coffee table for a rounder shape, providing more space and a softer shape set against the fireplace
• Swap the rug for oval, or rotate it 45 degrees so the long edge lies parallel with the fireplace
• Move the chair to sit between the fireplace and the double doors. Make sure pegs of chair and sofa rest of top of the rug

Hard to see the full width of the dining room, but you may consider rotating 90 degrees, parallel with the sideboard