My husband and I are planning a trip to Europe in September. We want to visit Paris, Switzerland and part of Germany. In Switzerland, we are thinking of visiting Lucerne and Interlaken. Is three days in Lucerne enough? Should we stay in Interlaken or Murren or Wengen? How long should we stay in this area? Should we rent a car for these places or are there private tours available? Also, any suggestions on hotels or small inns or B & B? We would rather not stay in large chain hotels. After Switzerland we are planning to go to Munich. Should we fly or take a train?