Request for advice on 3D/2N Lan Ha/ Halong bay cruise ( or other less crowded islands)

Request for advice on 3D/2N Lan Ha/ Halong bay cruise ( or other less crowded islands) Moderately priced-(less than $1000 USD for 2) Mid April 2026 1.) most reputable sites for booking. 2.) where to find the actual ship with real photos and itineraries. I’ve researched for months and have found reviews from others having issues with booking a specific ship and then getting pushed to a lesser ship/ cabin. -Booking .com has a great list but some of the ships are literally floating hotels vs having the excursions to different islands and don’t state if they have any itineraries etc. Any advice/ previous experience would be appreciated!