Horse-drawn carriage is attractive, apparently (6)
I believe the answer is:
hansom
'horse-drawn carriage' is the definition.
(I've seen this in another clue)
'attractive apparently' is the wordplay.
'attractive' becomes 'handsome' (I've seen this before).
'apparently' indicates a 'sounds like' (homophone) clue.
'handsome' sounds like 'HANSOM'.
'is' acts as a link.
(Other definitions for hansom that I've seen before include "Old horse cab sounds attractive" , "Two-wheeled one-horse carriage" , "Two-wheeled horse-drawn covered carriage" , "transport from the old days" , "One-horse cab" .)