Wall beds can be installed almost anywhere and are becoming a popular choice for tiny houses and home offices, as they can double as a guest bedroom. They’re also commonly added to spaces where an extra bed might be needed, like a family room, living room, den, or a small bedroom where saving floor space is important, such as a child’s room. The only areas you can’t install them are the kitchen, bathroom, and dining room, due to space constraints and health or building regulations.