Transport hotel involved in fixed rental (7)
I believe the answer is:
enthral
'transport' is the definition.
('enthral' can be a synonym of 'transport')
'hotel involved in fixed rental' is the wordplay.
'hotel' becomes 'h' (phonetic alphabet: alpha, bravo, charlie etc.).
'involved in' means one lot of letters goes inside another.
'fixed' is an anagram indicator.
'rental' anagrammed gives 'entral'.
'h' put inside 'entral' is 'ENTHRAL'.
(Other definitions for enthral that I've seen before include "Bewitch" , "Hold captive" , "Totally fascinate" , "Beguile" , "Delight - transport" .)