A really great authentic greek food store/cafe/casual eatery. The menu is blackboard and spoken. In many ways it is the greek version of the waiters club (italian), only I would say more hospitable, comfortable and with more menu items to choose from. All your greek classics and favourites are there, and in generous servings, as per the greek way. Dips with bread, greek salad (with a higher than usual proportion of feta), saganaki, lamb giros etc.
A really pleasant place to go for high quality but not necessarily sophisticated greek food.