From the Esch train station it's about a 15 minute (1.2km) walk to the KuFa. When exiting the train station turn right and go on Boulevard John F. Kennedy. This turns into Boulevard Berwart. Stay on this road also when it makes the left turn. This road will turn into Rue de Luxembourg, the road which the Kufa is located on. So basically, as you exit the train station you turn right and just keep on going on the same road, which changes names 2 times.
Please only travel by plane, if other – more environmentally friendly – options are not possible. The Luxembourg airport (LUX) has good direct connections to most European and some non-European countries. From the airport you can take the bus to the Luxembourg central station which takes about 20 minutes. From the Luxembourg central station you can take a train to Esch which takes 23 minutes. See "Arriving by Train" to see how to continue from there.
If you plan to use the public transport in Luxembourg, we recommend to install the Mobiliteit.lu app, which is available via Google Play and the Apple App Store. If you don't want to install the app, you can also get various information on the website www.mobiliteit.lu. Luxembourg offers nationwide free public transport for everyone, which includes bus, train and tram.
On the following map you can see where the conference location is located relative to the camping, the train stations, and the airport.