The phrase "private oasis" means a peaceful and secluded place where someone can relax and be alone. It is like a personal retreat away from the busyness and distractions of the outside world. Full definition
When I enter my home I feel as if I have arrived in my own private oasis of comfort and calm. (theinspiredroom.net)
As your own private oasis from the bustle of life outside, we believe that the extra space truly makes a difference, allowing you to unwind in comfortable surroundings. (greatrail.com)
Private oasis on over 4 acres, yet part of a vibrant neighborhood. (legacysir.com)