The most common and most likely answer to this crossword clue is the 10 letter word HOTEL-DIEU
I've seen this crossword clue in Independent
H
O
T
E
L
-
D
I
E
U
Buddy explains!

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.