I was searching for a Halong Bay tour and found a blog that said the Cozy Bay tour was very good, so I searched for sites like Tripadvisor and KKday. aplication handles it and has a Japanese corporation, so I booked with aplication. As the blog said, the Halong Bay tour was very comfortable and I was able to participate with peace of mind. There was also a Japanese tour, but it was a bit expensive, so I booked an English tour even though I couldn't speak English. MINH Pham, the Cozy Bay tour guide, was kind to us who were not good at English, and I was able to spend time with peace of mind during the tour. If there is a point to note on this tour, it is the hike to the observation deck on Ti Top Island. The stairs are steep from the start of the climb, so be prepared and aim for the top. My wife and I in our 50s gave up early and spent time on the beach terrace. On the way back, a tea party with a DJ was held on the ship, and people of various races were having fun. I think it's a party with an atmosphere that you can't experience on a tour only for Japanese people. A little about aplication. I inquired about some questions about this tour, and the Japanese staff responded and responded quickly. I was able to use aplication with great peace of mind. I felt that aplication is a site that I would like to use in the future.