One of the first things you will have to ask yourself is where you will be placing your dining table. A round table curiously seems to draw all elements that surround it towards it, thereby anchoring itself (and the chairs) visually more than a rectangular table would. It also takes up less space.
The iron chandeliers hanging from the ceiling add a certain quirkiness in the area that makes it look very modern and unconventional. Here are some more unconventional dining spaces to mesmerize you.