We are in Oslo for 3 days and would like to do the NIN trip.
We're are trying to decide if it's best to do the "18 hour" version that ends with Voss-Oslo, or if it's worth the extra cost & time to do the "24 hour" trip that continues to Bergen, with an overnight train back to Oslo.
Also wondering if anyone has thoughts on how comfortable the "regular seats" are on the overnight train, or if we should pay extra for a sleeping compartment?