It is my favorite dlc for new Vegas. The atmosphere was very enjoyable. It had a haunting feeling. I love survival horror.
The only things I didn't like were:
-Obviously no returning. That can easily be fixed with mods, but it just feels tacked on.
-villa is too small. It's the most interesting place in all the dlcs and game itself, but you hardly spend enough time there. I want it bigger.
-The casino parts. While it was enjoyable storywise with choosing how to deal with each character, it was very dull and boring gameplay wise. All you did was avoid holograms and run around. Sure there were a few ghost people who broke in, but there are only a few of them and they are only in the entrance. I wish they infested the madre. It would have been cool if it was the ghost people's main base rather than that boring plaza.
-Too few guns. I'm not talking about ammo. I want ammo scarce. I just wish there were more gun types.