Ran the series for Adventurer's League, and I've also been a player earlier this year.
TL;DR - This primarily an Exploration/RP Pillar adventure - If you and/or your group like freeform and evocative roleplay with memorable npcs, and you like to take your time describing moods and locations, this is the mod for you.
What went well:
This is a highly evocative mod that works well for a freeform dm - Quite a lot of flavorful descriptions and backstory to pull from, and two extremely memorable locations.
The first part of the module is set up, with light detail around a portside town, and then heading into the ocean on a freshly built ship. You get to participate in a ritual to christen the ship and name it, and of course things go horribly wrong.
The second half of the module is exploration on a corrupted island with a dr. moreau-like theme - something strange is going on and the trail end in the blood-soaked lair of a very unique villain.
What doesn't work as well:
As noted from some of the other reviews, you'll need to take some creative license to ramp the difficulty of encounters if you have a highly optimized tier 2 party. The final battle can be over very quickly if players abuse initiative or nova builds, and I strongly advise running legendary resistance for common "game over" finishers like stun-lock, polymorph, banish, hold monster etc.