Iranian border crossing (Noordooz - Agarak)
There is a café in the Armenian customs hall. It's at the end of the westerly hall, hidden behind the smoked glass, and curtain-draped partition.
The give away is the Coca-Cola sign, the size of a bottle top hanging behind the smoked glass.
You can access the westerly hall via a central corridor, which is an apparent thoroughfare for everybody (not only customs personnel).