Noblewoman's room for drinks on European ship (8)

I believe the answer is:

baroness

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'noblewoman's' is the definition.
(baroness is a kind of noblewoman)

'room for drinks on european ship' is the wordplay.
'room for drinks' becomes 'baron' (I can't explain this - if you can you should believe this answer much more).
'on' says to put letters next to each other (in a down clue, letters appear on others).
'european' becomes 'e' (abbreviation e.g. EU).
'ship' becomes 'SS' (prefix in ship names eg SS Great Britain).
'baron'+'e'+'ss'='BARONESS'

Can you help me to learn more?

(Other definitions for baroness that I've seen before include "Peer's title" , "Titled lady" , "Female life peer" , "Lady peer" , "Aristocrat" .)

I've seen this clue in The Telegraph.

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