The bottom line is that this an excellent book, without which our two holidays in Kranjska Gora (2010) and Bohinj (July 2011) would not have been nearly so enjoyable. The book is very well researched with a very helpful introduction and detailed walks of various levels based at five centres in Slovenia plus a section on Hut-to-Hut routes and a detailed list of useful contact details. Whilst recommending this book enthusiasically to anyone considering a hiking holiday in Slovenia I would just make a few points.
The book appears to have been written by two very keen and experienced mountaineers (one can surmise this by their beaming expressions, in the photo of the two of them against a rock face at the start of the book!) I would, on occasion, agree with one of the earlier reviewers who suggested that their assessment of the level of difficulty of some of the walks could be slightly misleading. As an example for route 28 'Prsivec' (Bohinj) the authors comment that 'The route climbs steeply through the woods, but the height gain is a pleasure because of the laid stones of the old cart track that still survive in many places' - well, the height gain may have been a pleasure for Justi and Roy, but it was certainly not for me - in fact it was an absolute slog, which seemed to go on forever! Having said that I should point out that I am in my mid 50s, but am generally fit, go to the gym and usually go walking on the South Downs every weekend as well as having walked the Pennine Way (admittedly many years ago). The other point is that, inevitably, some routes and signs may have changed. On the same walk (28) the guide says 'The path continues up and past the hut, [this refreshment hut was indeed most welcome after the slog uphill!] and then levels out at another planina with wooden buildings signed 'Prsivec 2hrs30'to the left.' Well, there was indeed a sign at the designated spot but it definitely did not say Prsivec, as a result of which we went the wrong way and lost an hour (in a 7-8 hour walk), so that we never made it to the top (although this had more to do with my wife getting blisters). Prsivec was indeed signed but not until after you had already turned off onto a track signed to a different location.
In Kranjska Gora the previous year, I noted that for Route 1 (Zelenci) the signposts, which according to the book, featured place names, had been replaced by numbered routes, which meant nothing to us at the time - but this was not a big problem.
If you are in Kranjska Gora, I would strongly recommended doing Route 3 (Srednji Vrh) - a fantastic walk in all respects - after a bit of a slog up through a forest (well, for me anyway) the route levels out and from the terrace section you get the most marvellous view of the Julian Alps, and I loved hearing the cow bells. Other walks we really enjoyed were the nice 4 hour walk round Lake Bohinj and the ascent of Rudnica - none of these we'd have done without the book. The walks are helpfully graded in 4 levels of difficulty.
Notwithstanding the caveats made above I would recommend this book enthusiastically - an essential purchase for anyone wanting to walk or climb in Slovenia.
I shall look forward to their next publication 'Gentle strolls in Antarctica'!