It definitly does not meet the claim "off the beaten tracks". Just one Example from our time in Java. We planned to travel from Malang to Mount Bromo and onwards to Ijen. There was no proper info on how to get from A to B. Only recommendation for tour operators (Which charge a lot! Better try to organize your own car and / or driver).
Finally, I had the impression did the 2013 is just a re-published version of the previous one. Information is the Oft The Same. And sometimes even wrong or outdated, Which really annoyed me since we traveled through Indonesia only a few months after the publishing date.
Summary: good guide as a starting point. for German speaking travelers "Stefan Loose Indonesia" is a good alternative. for detailed info and hints about traveling off the beaten tracks dig into TripAdvisor, VirtualTourist and co.!