A fraction in temporary accommodation hotel (5)
I believe the answer is:
tenth
'a fraction' is the definition.
(tenth is a kind of fraction)
'temporary accommodation hotel' is the wordplay.
'temporary accommodation' becomes 'tent' (I've seen this before).
'hotel' becomes 'h' (phonetic alphabet: alpha, bravo, charlie etc.).
'tent'+'h'='TENTH'
'in' is the link.
(Other definitions for tenth that I've seen before include "One behind ninth" , "(Decimal?) fraction" , "Decimal part?" , "Fraction in tithe" , "0.1" .)