Hotel specialist tipped to administer leaderless institution (9)
I believe the answer is:
orphanage
'institution' is the definition.
(I know that orphanage is a type of institution)
'hotel specialist tipped to administer leaderless' is the wordplay.
'hotel' becomes 'h' (phonetic alphabet: alpha, bravo, charlie etc.).
'specialist' becomes 'pro' (professional).
'tipped' is a reversal indicator (letters tipped over).
'to administer' becomes 'manage' (managing is a kind of administering).
'leaderless' means to remove the first letter.
'h'+'pro'='hpro'
'hpro' written backwards gives 'orph'.
'manage' with its first letter taken off is 'anage'.
'orph'+'anage'='ORPHANAGE'
(Other definitions for orphanage that I've seen before include "with deprived children" , "home for little Annie" , "Institution for parentless or abandoned children" , "Home for parentless children" , "Parentless children's institution" .)