For Hungarian craft beer, i'd recommend Eleszto off tuzolto utca near Corvin-negyed on line M3 , Lehuto on hollo utca in the centre or Szimpla Kert on Kazincsky Utca, also in the central area.
Hopfanatic on Hunyadi ter near vorosmarty utca (M1) had some great beers last year but it may be...