Copenhagen Airport has great connections to all of Europe. Copenhagen Airport is situated 14 km from the conference venue. Regional trains, metro and busses run from the airport to the center of Copenhagen.
You can take the train from the airport to the central station (København H) in Copenhagen. From there you can walk to the venue (app. 15 minutes) or take Bus 66 which stops right by the venue.
Or try this website: www.journeyplanner.dk, where you can organise trips around the city by inserting simple keywords such as venue, street or station.