Yeah, liked it. 7/10 overall IMHO.
I kept laughing at the DOOM door sound-effect, which wife-of-Istar thought was very sad.
This, I thought, was interesting:
Rose: Can you, like, build another TARDIS?
Doc: No. They're grown, not built.
I'm assuming he meant fractally, rather than biologically. Kinda like the way those little crystal kits grow. Like that idea, and ties in nicely with the concept that the interior of a TARDIS is indeterminately large, with lots of areas to see, and perhaps as-yet unexplored by The Doctor himself. I'm thinking of the various on-screen stuff we've seen over the years where chunks of TARDIS make an appearance (or are jettisoned) in a story.