there's several house/techno clubs in budapest.

last time i was there, felipe was @ zenith.
there's a few more other spots that I cant remember of the top of my head.

if youre there at the right time, theres prison techno night at club alcatraz. it's about an hour outside of budapest in a city called kiskunmajsa.
there's also club play in godollo, which is just right outside of budapest.

...budapest is a beautiful city.