I would remove the cover you have on table right now. Just wondering if your furniture is Japanese , just curious :) also details of windows seems to have some Far Asian influence. I would brighten the table up with a bowl of flowers to match the scene, chair covers too with tie backs, table mats, and rug under table. Try to colour coordination table accessories, chair cover, rug and curtains. Center the table in the middle of room and add sideboard near window or corner display cabinet.

More details needed.

First thing you need is a pad of graph paper to understand that there is no way the furniture items are to scale (exception could be the dining table) I'm guessing the kitchen is off to the left and the main entry is into the Drawing room? Can the wall be eliminated between the two spaces for more flexibility? - if so, the drawing room space would lend itself perfectly to a round dining table. But the main thing is to draw on graph paper the space & actual dimensions of the furniture you'll be bringing to your new home - so you are not shocked when you move in.

Sorry I don't understand. With the high ceiling, would ceiling fan(s) work as well as an AC?