The most common and most likely answer to this crossword clue is the 8 letter word BOLTHOLE
I've seen this crossword clue in Financial Times
B
O
L
T
H
O
L
E
Buddy explains!
The straight part
We know that "somewhere to hide" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case somewhere to hide = bolthole.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 BOLTHOLE mean?
BOLTHOLE noun- A hole in an animal's den, or through a wall or fence, used for escape or emergency exit; i.e. a hole the animal may bolt through.
- A second home, etc. where a person can go to escape the stresses of everyday life.