It's quite a small city, compared to places like London or Manchester, but I'd guess it's about on a par with Cambridge, or maybe Oxford. Very old, lots of history, everything's made of flint. You can get some amazing food there, and the people are... well, there's this phrase: "Normal for Norfolk". (Norfolk is the name of the county of which Norwich is the county town.) Until the fens were drained in the C 18th, Norfolk was pretty much cut off from the rest of England, which has led to some cultural peculiarities (and the obligatory and uncomplimentary suggestion of in-breeding).

Norfolk as a whole is very flat, dry in summer, but windy and can be very cold in winter (it's on the edge of the North Sea). The university itself is well outside the city. The campus is 1960s/70s grey concrete, but don't let that put you off.

Um... that's all I can think of for now. You could always try upmystreet.com for more info: http://www.upmystreet.com/l/Norwich.html