The most common and most likely answer to this crossword clue is the 11 letter word PLACEHOLDER
I've seen this crossword clue in The Times
P
L
A
C
E
H
O
L
D
E
R
Buddy explains!

The straight part
We know that "temporary accommodation" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case temporary accommodation = placeholder.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does PLACEHOLDER mean?
PLACEHOLDER noun- Something used or included temporarily or as a substitute for something that is not known or must remain generic; that which holds, denotes or reserves a place for something to come later.