Is there a train that will take me from TXL to the InterCity Hotel in Berlin? This hotel is located at a train station, so I imagine that it would be easy. I just need a little guidance.

InterCityHotel Berlin
Am Ostbahnhof 5
BERLIN 10243

Above is the address. I stayed there once before, but a friend picked me up at TXL, so I didn't think about grabbing a train.