Mar 11, 2018 - 12:35 AM
Grächen is very attractive area, and a bit more off the beaten track so a good choice.
However Grächen is not the best place to stay if you are determined to do the Jungfrau area as you are the south side of the Bernese Oberland mountains. Getting there would be a bit tortuous by road (very tortuous is you want to avoid the Lötschberg car carrying train) . Train is much better (St Niklaus -Visp - Spiez - Interlaken.
If you are staying in the Valais, I recommend enjoying that area more leisurely (visitors to Switzerland tend to get drawn into to trying to cover all the 'classics' in one go.)
Instead of staying in the Valais but then leaving it to go to the Bernese Oberland for the day, why not go west down the Valais valley and over to Mont Blanc?
unusual little railways and cableways