One feature I'm curious about is the audio guide on Hop On Hop Off Palermo (https://www.hop-on-hop-off-bus-tours.com/tour-city-sightseeing-palermo-hop-on-hop-off-bus-tour) buses. Is it informative and engaging, or just basic information? I enjoy learning about the history and culture of a place while traveling. For those who've tried these Palermo bus tours, did the commentary enhance your experience? Are there multiple language options available?