You can travel to Lübeck by air, by train, by car and by sea. Lübeck is located about 60 km northeast of Hamburg.
Air travelling: Flights will carry you to Hamburg Internationl Airport (HAM), there you'll find the "TraveLiner" bus shuttle to Lübeck. Maybe you will get a flight which carries you to Lübeck's own local airport "Blankensee" (LBC) which is served by public bus line 6.
Trains: Trains to Lübeck depart from Hamburg main station at least once every hour. The trip takes about 50 minutes. Hamburg main station is a key traffic node in the German railway net and hence perfectly linked to many German and European cities.
Road trip: Head for Hamburg and change to highway A1 northbound to Puttgarden until exit "Lübeck-Zentrum".
Sea cruise: Several ferry lines connect Lübeck-Travemünde with Scandinavia. The Baltic Sea port is connected with Lübeck by bus and by train.
Arriving on highway A1, turn right at the first roundabout and turn left into B206 "Fackenburger Allee" at the second intersection. Follow B206 to the next roundabout and leave at the last exit direction Holsten Gate. Turn left into "Willy-Brandt-Allee" before you pass the gate; you'll find the conference hotel on the left.
Bus stop "Holstentorplatz" near the Holsten Gate is served by line 6, connecting with the local airport. Coming from the airport leave the bus and turn right into "Willy-Brandt-Allee", the hotel is on the left.
From Lübeck main station ("Hauptbahnhof") take a short walk down "Konrad-Adenauer-Straße" to the roundabout. Head to the Holsten Gate, cross the bridge and turn left into "Willy-Brandt-Allee", where the hotel is on the left.
Find additional information on the city's public bus system here.
Find additional information on travelling by train here.