Seating arrangements for your restaurant should certainly be comfortable, aesthetic and functional. Comfort depends on the quality, sturdiness and rigidity of the furniture itself - aspects like the seating foam density, leather upholstery grade, abrasion level of the upholstery and so on.
Aesthetics has to do with the type, size, dimension and design of the furniture you opt for, apart from furniture that looks premium, exquisite & expensive in and of by itself, it should also be consistent not only with the other furniture, but also with the overall theme of the restaurant itsef
Lastly, the seating furniture should also serve some goal you're trying to achieve with your furniture, using encircled dining booths for maximizing privacy, making the barstools and counter area a lot more comfortable and premium to have the guests dwell there and spend more instead.
At FurnitureRoots, we aim to change the way you procure furniture from the bottom up. This is also why we custom manufacture our furniture for any bulk order that constitutes more than 20 table-chair sets to be eligible to work with us and enjoy direct factory pricing