The mapping on the chair back is not correct. If you use the same material, the laminate grain should run in the other direction (along the bar, not across it), and strech it well along the bar. Do a google image search for 'thonet chair'
If you want to add hyperrealism, I may think of adding the aluminium spacers between sheets of glazing (in double glazed units). They will give you a nice, chrome-gloss effect contrasting with the powder coating of your curtain wall bars.
And just for architectural critique, I would add blinds - your customers are going to roast to death at lunchtime!
And to finish, and this is a complete personal opinion, I don't think the solution is to add clutter/ plates/ cloth etc. I would try to do the opposite, just show a few tables and chairs, maybe a bottle of wine and two glasses on the floor. A clock on the wall, to draw a bit of attention there?