After talking with Martin, we have agreed that a good typical spanish dinner with roast lamb, suckled pork, or fish would be interesting and not too expensive. We suggest Restaurante (or Asador?) El Segoviano, Ciudad de Barcelona Av. number 108.
Today Wednesday, reserved (without specified number) for 9.30 P.M..
Metro closer stations Atocha and (recommended) Menendez Pelayo.
Be very careful whe looking for it, as, because of a big church, and some other constructions, number 108 is in front of number 1 of the same street.