Saloon in tropical city (6)
I believe the answer is:
hobart
'city' is the definition.
(Hobart is an example)
'saloon in tropical' is the wordplay.
'saloon' becomes 'bar' (synonyms).
'in' means one lot of letters goes inside another.
'tropical' becomes 'hot' (similar in meaning).
'bar' going into 'hot' is 'HOBART'.
(Other definitions for hobart that I've seen before include "Tasmanian city" , "Capital city of 10 across" , "capital on an island" , "Port of Tasmania" , "Capital city of Tasmania" .)