Maestro to play in ship’s cabin (9)
I believe the answer is:
stateroom
'ship's cabin' is the definition.
'stateroom' can be an answer for 'cabin' (I have seen 'Private cabin' mean 'stateroom' so perhaps 'cabin' could also mean 'stateroom'). I'm not certain of the 'ship's' bit.
'maestro to play' is the wordplay.
'play' indicates anagramming the letters.
'maestro'+'to'='maestroto'
'maestroto' is an anagram of 'STATEROOM'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for stateroom that I've seen before include "Luxury cabin on a liner" , "part of palace" , "Place fit for a 27 [PRINCE]" , "Private cabin on board ship" , "Passengers's private compartment on ship" .)