Szczecin is situated in north-west Poland very near to German border. From Szczecin to Warsaw is about 560 km, to Berlin 160 km.
Szczecin has an air-port which is situated about 40 km from the city center. The Szczecin air-port have direct connections with: Warsaw, London, Dublin, Oslo.
Another very convenient option is to fly to one of Berlin's air-ports, which are very well connected. From Berlin you can get to Szczecin by shuttle bus what takes about 2,5h. One way ticket costs about 20-25 EUR.
Seat in a shuttle bus has to be reserved in advance (usually 2 or 3 days is enough). We recommend two companies:
Train time table for the Szczecin main train station (Szczecin Glowny) is available at the website of Polish Railway Company. Travel in train from Warsaw to Szczecin takes about 5,5h, from Berlin to Szczecin 2,5h.
List of all hotels in Szczecin is avaiable here