From the breathtaking scenes and excellent music to the epic fights you can have with people its a wonder why it isn't on the spotlight more often. I do have some complaints though, it feels sometimes that its hard to understand the game as you need to find stuff out yourself way too much and you can get bored really quick if you don't have someone to explain it but if you know what you are doing and know how the game works then it is as good as you could ever expect a pirate game to be.
Online players might be considered "toxic" but if you just be friendly to others most often they will have a good response. Don't forget this is a multiplayer game and you will meet some bad people but that shouldn't be blamed on the game but the people and their critical social behavior.
There are some bugs here and there but you often don't see them and my best recommendation for you is to research stuff about the game and learn from it since it will be 100 times more fun to know what you are doing and what you need to do.