Best solution

Analysing all the solutions I think that the best solution could be having this:
A volume sliding inside the other one, like I have seen in this project.

But, keeping in mind that I want a trasparent and porous passage, I think I'm going to divide this volume in two parts: one for the passage and the other one for the bar table, where people can sit and see other people passing..

So drawing the plan I noticed that I have like three areas: one for the passage where people pass and can sit for a fast coffee/cappuccino with croissant and the other one where the kitchen is with normal tables where you can sit and have your breakfast serenely. The third one, instead could be an external area where you can sit in sunny days and that is more protected due to the near plants that seem hugging this space. 

The only problem is that, in this way, people sitting inside on the bar table look at people sitting outside and viceversa. It is not a good thing and I really don't like this situation but if I put this tables on the other side I loose the protected area idea. How can I do?