Square and rectangular tables are the most common, so you’ll find the greater number of choices there with styles, sizes and extendable options. But a round or oval table can give you a little more space to move around since it cuts off the corners but still has a good surface area.
First, marble tables of any kind are bulky and heavy. Second, they have to be well looked after, as the marble can crack and stain. To avoid stains, keep the table cleared and clean at all times, covering it with a tablecloth or placemats when red wine and foods that can damage marble are on the menu.
As a longtime apartment-dweller, I’ve found that the visual weight of a piece of furniture can really influence how big it feels in a room. It may technically fit, but it’ll seem huge if it’s a dark or bulky piece or if it’s too close to other furniture.
Settle on a shape that will work in most rooms. Round tables look good in compact rooms and living areas that have square dining zones. They also offer flexible seating.