Take the Airport Express train RE7 or RB14, which goes directly to stop Friedrichstrasse and runs every 30 minutes.
Exit onto Friedrichstrasse and walk north to cross the River Spree. After the bridge take the second street to your right into Johannisstrasse, walk 150 m down the street and you will find us on the left hand side at number 11.
Costs are 3,80 Euro (Ticket ABC), takes about 45 minutes. Tickets are available from ticket machines on the way to the Train. Sometimes there is a long queue so you can also try the App from BVG on bvg.de to get your ticket online.
You can find all ticket prices here.
For detailed information and alternative directions head over to bvg.de
Here you can check the prices for a taxi taxi-calculator.com