Directions from Déli train station

At Déli station you should walk down the steps at the front of the platforms and follow the signs for Metro line 2. At the entrance to the metro station buy regular metro tickets (or a 24/72 hour pass) and stamp the tickets before descending the escalators to the platform.

Take the metro in the direction of Örs Vezer tere to to Kossuth Lajos tér.
Ascend the escalator. Exit the station to the left (you will see the parliament building in front of you) and turn right. Walk straight ahead up Báthory utca. Number 17 will be about 300m away on your right.

Google maps directions