As of September 2020 the suggested highlights are still valid and open. I used the guide to plan a 2 week vacation for my wife and I (30s couple) and to fill 2-3 hour gaps of time time where I had nothing planned.
The sites, "ways to get there", towns and villages are accurately described. The context section added a different dimension and depth to sites visited where no English tour was available.
I did not visit any of the suggested places to eat, camping sites or stay at the suggested accomodation.