It is a small tapas bar located in the modern district of Salamanca. It is popular because it has low prices, a quite traditional tavern decor, and is located in a very residential neighbourhood, near the cinemas.
They offer the typical tapas, they make tostas (open sandwiches) with sepia, tuna, anchovies, lacón or crab, and there are then the rations for between 6 and 12 euros. Iberian ham, beef or loin, chorizo or sausage all accompanied with your bread. The cañas (Small beers) are very cheap too.
The only problem is that as it is a success there are a lot of people and only two people preparing the food, so it is best to ask for it all at the start and it will come slowly but surely.