Here is a revolving bookcase wall bed with a mattress and dining table that can be hidden away easily. Designed for smaller homes in mind, you can use the shelves to store your books and other belongings. With a simple twists and turns, you can hide your books and bring out the bed. You also get a dining table.
The above video shows how the Revolving Bookcase Wall Bed works. You can find more information about it on Expand Furniture’s website.