Hi Lea, firstly, what an absolutely gorgeous space! Lucky you! Looking at the ceiling, I would be inclined to leave it as is. High ceilings in a space are so luxurious and will give the home such a grand look and feel, I wouldn't lower the ceiling just for a rake over the dining table. I actually don't mind it truth be told. You could lean in to, put a shorter pendant light over it and make it feel more cosy and intimate. Hope that helps X