I just completed this drama and I must say, as a fan of xxxHOLIC, that it was a great adaptation.

The characters felt very close to the anime and the acting was really good.
I haven't read the manga so I am going to refer to the anime.

The acting was really good and I especially enjoyed Adachi Yumi's (Jorogumo) acting. She was enjoyably evil.
I also liked the fact that the actresses' makeup wasn't too much.

Furthermore, it was nice to see outdoor scenes.

I noticed that they made some changes to the script which I found unnecessary since the anime has a lot of material to cover.
In addition to that, the episodes are only 8 and rather short at that. For a series like that, you need more and longer episodes.

The opening and ending themes were good choices.

Overall, it is a good drama to watch, whether you're a fan of xxxHOLIC or not, and I must say that I would definitely rewatch it.