adj
a sheltered life/childhood/upbringing etc
a life etc in which someone has been too protected by their parents from difficult or unpleasant experiences
　I had led a sheltered life and had never met prejudice before.
a place that is sheltered is protected from extreme weather conditions
　a sheltered valley
sheltered accommodation/housing
BrE a place for people to live who cannot look after themselves properly and where help is provided if they need it
　sheltered accommodation for the elderly