Amanda, I was surfing Crate and Barrel because they have a bench that I thought you might like in your dining room... I've since determined that it is too casual for your space... But I got all wrapped up in their website and next thing I knew I was creating a room for an imaginary home.
I love the idea of a neutral palette, the contrast of black and white and the mix of metal and concrete, softened by sisal placemats and pottery. You can always add colour with flowers and pillows... That way you can host themed dinners and celebrations.