Attractively styled cathedral city (6)
I believe the answer is:
cutely
'attractively' is the definition.
Both the answer and definition are adverbs. Perhaps they are linked in a way I don't understand?
'styled cathedral city' is the wordplay.
'styled' becomes 'cut' (I can't explain this - if you can you should give a lot more credence to this answer).
'cathedral city' becomes 'ely' (English city with a cathedral).
'cut'+'ely'='CUTELY'
Can you help me to learn more?
(Another definition for cutely that I've seen is " in a rather clever way".)