From a Hungarian colleague:
Dozsa Gyorgy ut 72, Budapest 1071, +36 20-294-79-44
Cafes and bars: Vaci Street in Pest, most famous is Gerbaud
In Buda, lots around the castle.
More insider information is being sought from her brother, who is on the spot (Pest or Buda, one of the two
EDIT: this from the brother: Szegedi Halászcsárda - Budapest, Belgrád rakpart