This DLC is bad, really. Throwing dozens of enemies in an area isn't "difficult" it's nothing but bad game design. How do they expect someone to face 15+ wolves, 10+ ariandel followers, SIX Millwood knights (they're quite powerful), the tree women and two giant wolves with 15 estus? And it's not even the difficulty of the foes that ticks me, it's the fact that From just throws all of them in an area. That's cheap and unnecessary, considering how short the DLC is.
And just in case the 'git gud' squad invades, I'm quite good at this game. I just didn't enjoy playing this DLC. To me Dark Souls is about strategy, patience, and a difficulty that entices you to try again and learn from your failures, albeit being punishing. "Endless Wave" type of games are nothing but chores and that's exactly how this DLC felt like.
That being said, the scenery of Ariandel is very beautiful, the lore is rich and gripping. Also, Sister Friede is a GREAT boss. Solo-ing her is an incredibly rewarding experience. I died 4 or 5 times while fighting her because I just stood there and looked at how spectacular her attacks looked. She's one of the few redeeming points of the DLC, alongside the scenery, the new armors/weapons and the lore.
I don't regret spending for this DLC but it could've been so much better than what they gave us. I hope TRC will be better.