Buses were easy to locate, friendly team, drivers speaking few languages giving full information, earphones given at the first stop, informative guide, booking quick, reminders sent before activity. You can switch between two different routs by taking another bus from the same staring point. Stops located nicely around Frankfurt, lots to see and if you to lazy to walk you can just stay on the bus. Enjoyed it a lot!

Easy to book on line, arrived outside main train station Frankfurt and one of the stop’s straight in front of you. I usually complete the circuit and then find the most interesting things to look at. Usually get a 48 hr as it saves a lot of walking around city. You can then tailor your trip to suit your interests.

Bus tour and audio guide were great. Few things that could be improved: - Exchange of tickets to tour operator ticket could be avoided. - Map with bus stops could be provided online as well. - It would be great to give possibility to buy entrance ticket to MainTower in advance so seamless entrance is possible. - Providing exact arrival time of next bus could be handy to save time.