Tbh, cafes are social gathering places.   Cafe and crypto can be a great mixture if you execute it nicely; you can get people’s feedback in your area, also Vod’s idea is nice as well.   However, if you want to maximize profits, it’s best to make a cafe where non-crypto people can come and learn, a more beginner-inclusive project would be really cool.   If I were you, I would start by asking people around with polls such as : ‘Would you want a cafe and rest that is crypto themed?’, etc.

Good luck in your venture!