Last August we visited friends from Norway who are from Voss.
We flew into Oslo (scarily just a day after the terrorist attack), caught a scenic train to Voss, stayed there for 4 days then caught the train to Bergen, stayed a couple of days then flew out.
In Voss, our friends' neighbour was a part time guide and fishing nut, and he organised some fishing for me on the Gudvangen river in Gudvangen, which was closed for about 8 years due to overfishing, but recently reopened. I fished the public sections completely alone on the first day, then the owner of the beats showed me around on private beats on the second, and pulled out 3 fish to 15lb in a few hours.
If you'd like some details, drop me a PM.