Our guide Riki is super nice and professional. She is familiar with history and stories of Meteora. We also had plenty of time to take pictures. Another credit goes to the coach driver, he is very professional coz the hillside is super difficult to handle especially when it is a large coach. However, the registration is not smooth, since Klook doesn’t provide any QR code, the staff took a bit long time to register for us in the morning. Recommend to book with Sights of Athens directly.