During the drive, Michael was patient while I practiced my German, which was nice for me. He meanwhile made sure to point out various landmarks, and knew the names and what they were for (castles, monasteries...).
When we got to the hike, it was more challenging than my friend expected, but Michael had a set of hiking poles that he was able to lend. There were lizards, rocks to climb on if you wanted to, and excellent views of the Danube. He also took lots of pictures, then sent a Dropbox link to get them, an added nice touch.
After the hike, Michael didn't have anything scheduled, so he also offered to take us on an added tour through a nearby castle. He then walked us through, translating signs and discussing some Austrian history. We got lucky with his schedule, so it likely wouldn't happen every time, but it really made things great. I'd do it again.