Found one loose bolt before the 20 m rappel, but all the other's are perfectly fine. That one loose bolt also does not cause problems since right next to it there is another one, which is in great condition. There are few rope's set up and also an optional steel zipline. As it is said in the guide, it is possible to rappel C20 C5 C3 section all at once, but I wouldn't suggest it, because the rope can easily get stuck on the fallen tree in the C5 section. I was staying in the Bad ischl center so I just walked from my hostel, took about an hour to get there. After the final rappel there is a walking path for easy gateway to the city (took me about 30 minutes to reach Bad ischl center). I used a single 80 m rope, it was more than enough.