The Tauern Bike Path in and out of Salzburg, Austria was my 5th bicycle trip in Europe and once of the most scenic and beautiful bicycle tours I have experienced. The bicycle route itself is usually a paved path and primarily follows along river valleys, so the difficulty is easy to moderate and very manageable for a recreational rider like myself. I only walked my bike on a few short climbs and my 18-year old son had no issues with the difficulty. Navigation-wise, the tour company materials were fine and the route is well-marked, although I would recommend keeping a backup navigation aid or two in the form of google maps and perhaps a cycling map app. I was impressed by the high percentage of local Austrians cyclists who were using e-bikes along the path. So, if you are considering an e-bike but wondering if you would stand out - no worries, you will blend right in with the locals!
The thing that probably sets this tour apart from others in my mind is the impressive number interesting side adventures that you can have along the way - right next to the bicycle path. For us, these included medieval castles and falconry shows, hiking, waterfalls, mountaintop tram rides, and underground cave hiking - and we probably still missed a couple of other excursions we could have done along the way. Some of these are free and most do not cost more than the price of a tram ride.
As far as food and accommodations, they were excellent. I did the upgraded lodging option because I have back issues and I was thoroughly impressed. I would note that some the spa and health facilities at the properties are world class. The included breakfasts are great and we had no trouble finding restaurants with great food and drinks.
Overall, I would recommend this tour to anyone who wants a scenic ride through Austria without too much difficulty, especially if you want to be able to hope off your bike once and a while and do a few side hikes and other adventures.