hideaway

a hiding place, somewhere one can go to get away from other people

This weekend, let's find some romantic hideaway on the coast.

Capable of being stored out of sight when not in use.

Furnishings by Stanley Furniture Co. include […] a trundle bed with hideaway mattress that provides space for two overnight guests.

Thomas Jefferson, who held the first United States patent on a hideaway bed, devised a system of elevating and securing the bed to the ceiling.