Positives:
The final scene is one of the best in the series

Negatives:
It's placed right before the finale of the game.
Adds a district of Firenze... With nothing in it, well maybe like 1 or 2 important buildings but that's it, no content to do in that part of the map.
90% of it consist of basically the assassination side quests from the base game but much, much more annoying, honestly it's ac2 at its lowest.
That one mission with the ship, easily the worst part of the whole game.