Literally intended for the landlord, apparently (2,3,6)
I believe the answer is:
to the letter
'literally' is the definition.
(thesaurus)
'intended for the landlord apparently' is the wordplay.
I cannot quite see how this works, but
'for' could be 'to' (eg both can mean 'in the opinion of') and 'to' is located in the answer.
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is located in the answer.
'landlord' could be 'letter' (landlords let property) and 'letter' is found in the answer.
The remaining letters 'he' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for to the letter that I've seen before include "how should tenant's rent be paid?" , "Where one applies to rent property" , "giving every detail" , "Precisely" , "From the tenant, presumably" .)