In from France, temporary accommodation finally available, it’s agreed (7)
I believe the answer is:
entente
'it's agreed' is the definition.
(an entente is agreed between two people)
'in from france temporary accommodation finally available' is the wordplay.
'in from france' becomes 'en' ('in' in French).
'temporary accommodation' becomes 'tent' (people stay in a tent temporarily).
'finally' suggests the final letters.
The final letter of 'available' is 'e'.
'en'+'tent'+'e'='ENTENTE'
(Other definitions for entente that I've seen before include "Friendly agreement between countries" , "friendly relations" , "Informal alliance" , "Agreement between governments" , "A friendly understanding between countries, may be cordial" .)