Seeking a 2nd Day-Trip from Salzburg in April, using public tranportation. (We have Hallstatt planned--looking for one more).
We are hoping to see Alpine views.  Easy to moderate hiking, or no hiking, either way. 
Do you recommend 
--Berchtesgaden and Lake Konigsse (are both possible in a single day)   OR
--St Gilgen and St Wolfgang
we orignally had a day in Innsbruck, but forum members didnt recomend Innsbruck as a day trip.
any day itinerary from Salzburg is welcome!