The audio was excellent - clear and loud enough. Using earphones which I happened to bring helped quiet the German broadcast, although holding up the audio device to your ear is an okay option. I appreciated being able to choose a language. Guide covered a lot of buildings and areas.

Relaxing and enjoyable. It would have been better if the sound on the audio guide was not competing with the louder Geran recording that was being played to the passengers (many of us were usiing the audio guide anyway). So I struggled to hear at times. But this is feedback, not a complaint.

This boat tour was quite nice, however I thought I had booked a tour in English. This tour was entirely in German so I understood very little of the audio - I only saw on my way out of the boat a sign that said audio guides in other languages were available for 2 euro, which I gladly would have paid. No one seemed to have one, though. The views and time on the river were still quite nice, but if you want a specific language make sure you book one in that language or ask about the audio guide! I still enjoyed it.