Make the most of your space by choosing double-duty furniture with multiple functions. This ottoman fills the role of foot rest, coffee table and single bed for different occasions. When using it as a coffee table, top it off with a tray adorned with a pile of books and a vase of flowers to make it decorative; pull it up to your sofa to prop up your feet when you really want to hit relaxation mode; and lift the top to reveal a single bed that is easy to set up for your extra guest.
It needn't be consigned to the spare room - it works just as well in an office or even a lounge - but it's ideal as an essential extra bed for visitors. It's sturdy, easy to use, and looks smart when not in sleep mode.