Just like hotels, Halong bay cruises are also classified. 5-star or Top Luxury cruises might suitable for those who want to experience luxury services on board such as buffet meals, BBQ dinner, spa, cave dining, etc. If you are traveling on a budget, cruising on a 4-star vessel is also a great choice, which surely comes with fun activities, fulfilling meals, amazing staffs. Below is the best 4-star cruises in Halong Bay.