What colour is your floor?? Also is the wall on the right blue or grey??

I could see a large decorative mirror on the tan wall. On the gray wall what about 2-3 stacked shelf's to display some of your finer dinnerware pieces. A area rug needs to have 2 feet mim all around the table so I don't know if the space can take a rug at all I would think if a 8 foot round rug would fit. Search wayfair.com or anyplace for round rugs. measure 1st the table will be center on the round rug. I would try to find a med.scale print rug.

Was thinking the a large décor mirror maybe bring in the tone of the metal in the dining chairs eg. (Pic 1) with 2 wall mounted lights each side of the mirror (Pic 2) And on the grey wall a wine holder (Pic 3) or Shelving to Display Items of Value (Pic 4)
Not sure about anything on the floor as it's not always practical.

Just a thought , At the dining table place a chair so it will be in the corner then the others in their place. It will look better and will also give more room around the table to get up from the chairs.

I would definetly place a buffet or side board on the larger wall...and place a large Mirror over it horizonally maybe scones on each side, and find a nice area rug. Crown molding would look great (white) I'm not sure what color the white or gray? wall is. But if its white I would go Chocolate deeper...to blend in with the beige wall...If its gray Iwould repaint one or the other I don't care for beige and gray together they fight each other..so pick one then go deeper in that color. Maybe a Large shelf on the smaller of the two walls, . or a couple of small side chairs and a painting if you have room. A large 5-7 ft nicely potted plant/ tree would livin it up too. For the table a glttery table scarf..in brigghter colors...Pick some colors.. 1- for base -walls., 1 for accent walls...2 for accessories..make it POP.

I can definitely see some wall mounted wine storage looking great in that space. I've attached a few options that we carry at WineRacks.com