It is traditional, a real joy
The other day some friends took me to this hidden and picturesque spot in the center of Madrid. Someone either takes you or it is impossible to imagine that next to the Ideal cinema, in a rickety building, you can find such a place.
You first think it is a joke, since the lift looks old, but once on the sixth floor the restaurant is very traditional and the terrace is amazing although a little small.
As to food, "pimientos del padrón" (stuffed peppers), a plate of chorizo, morcilla (blood sausage) and other fried things not really necessary and a quite good marinade if I remember correctly.