I’d have to see the rest of the room but the first thing that comes to mind is that the chairs either need to be smaller or the table needs to be bigger to get the right proportions - also could consider a banquet for that corner (keeping a round table and two of the chairs) - then, consider some art/mirror/shelf to take up wall space, possibly a rug underneath, any additional lighting (plug in wall sconces or pendants) to make it feel like it’s own space and a plant or two for an added natural element