Lodge by the sea with Hugo perhaps, after leaving hospital (9)
I believe the answer is:
gatehouse
'lodge' is the definition.
(thesaurus)
'the sea with hugo perhaps after leaving hospital' is the wordplay.
I cannot quite understand how this works, but
an anagram of 'the' is 'teh' which is located in the answer.
This explanation may well be incorrect...
'by' is the link.
(Other definitions for gatehouse that I've seen before include "underneath Barbican" , "Lodge" , "Building by entrance" , "porter's place?" , "It guards entry to an estate" .)