hideaway

noun

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

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

adj

1. (not-comparable)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.”