If you wanted to work your way over to Salzburg, I'm there September 22-24 and have an 1100 train to Innsbruck on the 25th booked on the Austrian Rail site. On the 28th I have a 1036 train to Munich, also booked with Austrian Rail (found a hotel with $70 cash and points 14 mins out by train that will make that work). Fly home on October 1.