I chose changing neon lights, so you can use any color you want.
The black and white floor and wall are the same as you want. A more modern look can be created by just adding a plasterboard wall. That's how I designed it.
The bottom of the stairs is suitable for the waiting room. If you do not want to renovate the stairs, the same look can be achieved only between the two seats if there is enough space. The stairs will also match in wood or white.
If your restaurant does not serve alcohol, the bar area can be used for smoothies and fruit cocktails, and I also wanted to design it for customers to take photos. There is a standing payment section next to the bar.