From the airport

Tegel (TXL)
Bus 109/X9 up to U-Station “Jakob-Kaiser-Platz” – U7 direction “Rudow” up to
“Gneisenaustrasse” (17 stops, travelling time approx. 35 min), left into Mittenwalder
Strasse – Brachvogelstrasse, turn right into Johanniterstrasse (approx. 12 min walk).
Journey time + footway: approx. 45 min
or take a taxi, charge approx. 23 Euro

Schönefeld (SXF)
Bus X 7 to U Bahn station "Rudow", U7 to station "Gneisenaustr" walking through Mittenwalderstr. and Brachvogelstr.
to Johanniterstr.
or take a taxi, charge approx. 25 Euro

By car

Autobahn A24 from Hamburg/Rostock
A111 direction Berlin Zentrum (Zoo).  A100 direction airport Schönefeld up to exit Tempelhofer Damm left.

Autobahn A9 from Nürnberg/Leipzig or Autobahn A2 from Hannover
up to intersection Nuthetal A115 up to intersection Funkturm, then A100 direction airport Schönefeld up to exit Tempelhofer Damm left  approx. 2,5 km straight (Tempelhofer Damm Mehringdamm), turn right into Blücherstrasse, then 2nd street left in Brachvogelstrasse, right in Johanniterstrasse.

By train

Hauptbahnhof
Bus M41 direction “Sonnenallee”, get off “Tempelherrenstrasse”, turn left into
Tempelherrenstrasse, left into Johanniterstrasse (number 8)
Journey time: approx. 20 min

Ostbahnhof
Bus 148 direction subwaystation Tempelhof. Step off Wilmsstr.  
Walk through Wilmsstr. in Johanniterstr.
Journey time + footway: approximatly 25 minutes

Or see at Berliner Verkehrsbetriebe: www.BVG.de