Hotel: The hotel is located very close to Bonn central station (Bonn Hauptbahnhof).
Venue: From your hotel/Bonn central station it is a 15 min walk to the venue. In the building signs will guide you to the room.
From Cologne/Bonn Airport: The easiest way from Cologne Bonn Airport to downtown Bonn is by bus. The Airport Express Bus SB60 runs up to 3 times per hour between Cologne Bonn Airport and Bonn Hauptbahnhof (Central Station). Services are less frequent on weekends but at least once per hour. The journey takes less than half an hour.
From Frankfurt Airport:
Every two hours (.58), a direct Inter City (IC) train runs between Frankfurt International Airport (FRA) and Bonn Hauptbahnhof (Central Station) in less than 2 hours.
Alternatively you can take the highspeed Intercity Express (ICE) from the airport via Siegburg/Bonn. It departs up to three times per hour and it takes 38 minutes to Siegburg. From there you can take the tram 66 to Bonn, which runs every 10 minutes and needs about 20 minutes to Bonn. You just have to go down the stairs from the platform and find yourself at the tram station. It goes only in one direction so you can't get it wrong.
From Düsseldorf Airport: First, you have to take an aiport train (called Airtrain) to get to the airport's train station. The Airtrain is free of charge. Regional Express (RE) trains make the journey generally once per hour (.50) in about 65 minutes.