Airport Minibus Service is at your disposal, or you can call any of the reliable taxi companies.
Traveling to Kőbánya with M3 (blue) metro get off at Kálvin square (fourth stop), then going along Ráday street turn right at the second street, and you will arrive at Erkel street.
Traveling with M2 (red) metro transfer to the M3 (blue) metro at Deák Square. Traveling with M3 (blue) subway towards Kőbánya get off at Kálvin tér (second stop), then going along Ráday street turn right at the second street, and you will arrive at Erkel street.
Traveling with M2 (red) metro transfer to the blue metro at Deák square. Traveling with M3 (blue) metro towards Kőbánya get off at Kálvin square (second stop), then going along Ráday street turn right at the second street, and you will arrive at Erkel street.
Kalvin square is easy accessible from any directions. Go ahead on the Üllői street, and turn on the right at the first traffic sign into Erkel street.
Parking is available in the building's underground garage, but you also can park on the street (parking meter zone from 8 a.m. to 8 p.m.!).