We plan to spend 7 nights in the Berner Oberland area. We want to see Murren, Wengen, Gimmelwald, and the Schilthorn. In addition to that we would like to take boat tours of Lake Thun and Brienz and also go into Spiez and possibly Bern.
So...would it be better to book all 7 nights in Wengen, or would it be better to do half our nights there and maybe book the other 3 or 4 closer to Interlaken? Does it take a long time to go from Wengen to the Interlaken area? If so, we were thinking maybe we should stay nearer to Interlaken for the sights on our itinerary that are closer to it so there won't be as much back and forth. Any advice?