In the 1990s Chet and Carolee Lipton wrote a brilliant set of books about hiking in Europe:
Walking Easy in the Swiss Alps
Walking Easy in the Italian Alps
Walking Easy in the French Alps
Walking Easy in the Austrian Alps
In the 2000s these books were updated and combined into two books. New locations were added.
Walking Easy in the Italian and French Alps (last edition in 2002)
Walking Easy in the Swiss and Austrian Alps (last edition in 2007)
These books list several good hiking locations where you can base for a week and then give several easy hikes for the area. There is so much hiking information around now that we don't need the hike descriptions, but the list of places they chose are good for planning a hiking/walking trip. I...