We took the signature cruise on the Bai Tu Long Bay route. Due to an unexpected incident, our trip was almost changed to the Halong Bay route, but Alice from Klook worked diligently, and as a result, it turned out to be an even better trip than we expected. The Bai Tu Long Bay route was very quiet and peaceful. Although the boat wasn't new, it was lovely and well-maintained, and everything felt clean. We were the only Japanese guests, and while we weren't fluent in English, the ship's manager was very kind and attentive, so we never felt anxious. My elderly mother also enjoyed canoeing, swimming, and exploring the caves. Many thanks to Alice and the wonderful crew! Highly recommended!