Ran this for a group of 7 players. One player dies about an hour in and had to come back as a level 1 character. Even with that everyone had a great time. I made my party decide before the siege begane how they would spend all of the siege points without letting them know how many rounds there would be and it helped the siege run smoothly.
I was surprised at how enjoyable this module was to run. There's something for everyone in it, rp and combat. It also has some many perfect moments where you can terrify your players if you phrase things right.