Guests highlight the enjoyable and efficient experience of exploring Lisbon on electric bikes, noting that the e-bikes make navigating the city's steep hills much easier. Many reviewers praise their knowledgeable and enthusiastic guides, particularly Jet and Peter, for providing engaging historical insights and ensuring a fun atmosphere. However, some customers mention concerns about the condition of the bikes, with a few noting outdated equipment and maintenance issues. Overall, the majority recommend this activity as a fantastic way to see the city's sights while enjoying a unique and active experience.