By plane. The closest airport to Cottbus is BER in Berlin. From there it's a 75 minute train ride to Cottbus. Train tickets can be purchased here. Smaller airports close to Cottbus are in Leipzig/Halle (LEJ) and Dresden (DRS).
By train. You can find all information on connections and tickets on DB webpage.
Participants funded by the conference will be accomodated in Hotel zur Sonne. Other options close by are, for instance, City Hotel Cottbus and Altstadthotel "Am Theater".
