The Underdog sits on Iraklidon in Thissio, just west of the Acropolis-side tourist spine and close enough to the archaeological walks that it can rescue a sightseeing day without feeling like a compromise. The room is larger and more social than Athens' tiny espresso bars: a coffee counter, retail bags, brunch plates, and a courtyard rhythm where people settle rather than hover.
That size would be a problem if the coffee were decorative. Here it is the reason the place belongs on the Athens list. The brand's official awards page reads like a compressed history of Greek competition coffee, with World Coffee in Good Spirits, World Barista Championship, and Hellenic championship results tied to the team.
Coffee style
Order espresso first if you want the clearest read on the roastery. The Underdog is built around its own coffee programme, with espresso, filter, cold brew, retail beans, and capsules all treated as part of the same operation rather than separate cafe add-ons. The best visit is not only about chasing a rare lot; it is about seeing how a competition-heavy Athens name turns that training into daily service.
Filter is worth asking about when the bar is not slammed. The shop has the scale for a longer drink, and the staff can point regulars and visitors toward what is tasting best without making the exchange stiff.
What people go for
Food is a real part of the draw. The Underdog works for brunch in a way many coffee-first rooms do not, with plates and pastries that make it a practical late-morning stop before or after Thissio, Monastiraki, or the Acropolis approaches. That breadth also means the room can get busy, so the coffee-focused visit is best timed away from peak brunch pressure.
The feel
The flagship is not a hidden counter. It is a known Athens address, and the pace reflects that: groups, travelers, locals, and coffee people moving through the same space. The upside is energy and range; the tradeoff is that a quick espresso can become a wait if the room is full. Treat it as a sit-down coffee and brunch stop rather than a surgical grab-and-go.
Why The Underdog is shortlisted by Filter Notes
Filter Notes shortlists The Underdog because it gives Athens a coffee flagship with enough substance behind the crowd. Cross town for the house-roasted coffee, the competition pedigree, and a room that can carry brunch without losing the cup; know before going that it is a popular address, not a quiet secret.