Art that would appeal to a sophisticated café or restaurant owner, perhaps inspire them to create a small gallery on their wall for their customers to enjoy.
Here are a few suggestions that I got from my favorite cafe owner:
Decorative (flowers, still life)
Portraits/photos of people in a cafe or restaurant
Landscapes, especially local
Local street life photos or paintings
Cafe still life, pastries and coffee, etc.
Photos of the cafe itself
If you're not seeing your image, it's because I'm trying to set the general tone/approach/quality of the group to steer future submissions in the right direction.