We are traveling to Austria and Czech from San Francisco in mid September for 2 weeks, about 12 nights. We like to take out time at each destination and enjoy visiting historical/small towns and villages, and comfortable accommodations in a central area with walking distance to restaurants and shops. We will also be looking up for 1-2 day tours to visit the countries for scenery. What would be your recommended itinerary? Should we fly from SFO to Prague first or Vienna?