Blissfully peaceful (7)
I believe the answer is:
idyllic
'blissfully peaceful' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for idyllic that I've seen before include "Arcadian, peaceful" , "Charming, picturesque" , "Unspoiled and perfect" , "Delightful in every respect" , "Blissfully peaceful" .)