Ship less back to the 'not nice' part of Venice (6)
I believe the answer is:
vessel
'ship' is the definition.
(I've seen this in another clue)
'less back to the not nice part of venice' is the wordplay.
'back' says the letters should be written in reverse.
'to' is a charade indicator (letters next to each other) (I've seen this in other clues).
'the not nice part of venice' becomes 've' (I can't explain this - if you can you should give a lot more credence to this answer).
'less' backwards is 'ssel'.
'ssel' put after 've' is 'VESSEL'.
Can you help me to learn more?
(Other definitions for vessel that I've seen before include "Ship, or receptacle for liquid" , "Blood-carrying tube or a ship" , "A ship, a cup" , "Decide on or establish" , "Bark, possibly, needing water" .)