Getting to Sierre:
By plane: either from Zürich Aiport (ZRH) or Geneva Airport (GVA). From there, trains run regularly from both Geneva (~2 direct IR90 trains per hour, 2 hours of travel) and Zürich (~2 trains per hour, 2 hours and 40 minutes of travel). See the SBB website for exact connection times. The main train station in Sierre is named Sierre/Siders on the SBB website.
By train: Sierre is well connected to all major Swiss cities. From these cities, connections to other major European cities are available. See the SSB website for travel details.
By car: Sierre is accessible through the highway A9/E62 that crosses the town. The venue is easily accessible by car, with parking spots available. Be advised that using the Swiss highway requires to have a valid highway vignette.
The GPS coordinates are (46.29434628647226, 7.527487449074994) and an travel planner is available on the website of the venue.