I thought that while it did have some good action and a nicely horrifying/touching concept, the whole 1940s atmosphere was maybe a tad over-exaggerated, the episode began a long dark era of Captain Jack, and it included Rose. It's not uncommon for people to utterly despise Rose and what she did to the Doctor as well as to the stories. I'm thoroughly convinced that the show's quality will skyrocket now that we no longer have little-miss-vapid-mary-sue hogging the camera.
Just my opinion, of course. But it's not an uncommon one.