The most common and most likely answer to this crossword clue is the 7 letter word PRIVACY
I've seen this crossword clue in The Daily Telegraph
P
R
I
V
A
C
Y
Buddy explains!
The straight part
We know that "peace and quiet" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case peace and quiet = privacy.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 PRIVACY mean?
PRIVACY noun- The state of being secluded from the presence, sight, or knowledge of others.
- Freedom from unwanted or undue disturbance of one private life.
- Freedom from damaging publicity, public scrutiny, surveillance, and disclosure of personal information, usually by a government or a private organization.
- A place of seclusion.
- A relationship between parties seen as being a result of their mutual interest or participation in a given transaction, contract etc.; Privity.
- Secrecy.
- A private matter; a secret.