Without car transport public transport requires a bit of planning. We can help with transport from the airports. Nearest train station is Desenzano - 15 km.
Alt 1 (Ryanair)
Airplane to Bergamo Orio al Serio, (2 1/2 hrs)
Rental car to Pozzolengo (45 minute.)

Alt 2 (SAS)
Airplane to Milano, 
Rental car to Pozzolengo 90 minutes.

See & or Hertz via Ryanair.

Speed limit in Italy is 130 km/hr. You may find the smaller cars feel unsafe at these speeds. Motorway have own charges. Get ticket when entering and pay when exiting.
Norway to Pozzolengo