A "serene sanctuary" refers to a calm and peaceful place where one can escape from the outside world, find tranquility, and feel at ease. Full definition
Begin at the classical Yuyuan Garden in the Old Quarter, built during the Ming Dynasty, a quiet and serene sanctuary in this frenetic city, with its scenic pavilions, ponds, and streams. (virgin-vacations.com)
The villa's bedrooms are serene sanctuaries for enjoying privacy and rest. (luxuryretreats.com)
A pregnant belly is not the serene sanctuary you might imagine. (parents.com)