Sion, located in the heart of the Valais, can be easily reached by public transportation or with the A9 highway, via the St-Maurice or Lötschberg tunnels, there are many possibilities.
Do you live too far? Sion has its own airport and those of Geneva and Milano are not far away.
Trains timetable: www.sbb.ch
Buses timetable: www.postauto.ch