From the outside, Hunnia isn't an inviting place but trust me, it's worth proceeding down the stairs to this adorably grungy, below-ground music bar. Hunnia is best known for its Friday and Saturday live concerts, when A and B-level Hungarian bands take over the tiny stage for a high-energy concert. Many of the bands who play here were part of Budapest's alternative music scene during the later years of communism, in the '70s and '80s. Today, some of them are still going strong, as are their graying but loyal fans (they tend to sing along louder and more passionately as the night progresses).
If you're looking for a deeply local (musical) experience, this is it. Ironically, Hunnia, a decidedly anti-establishment bar, is located inside Budapest's upscale financial district, almost right across the Hungarian Central Bank.