The best sofa beds are a no-brainer furniture piece. Catering for overnight guests but folding up into a daytime seat, sofa beds are perfect if you’re short on space. After all, if you’re lucky enough to have a spare room, it’s probably a home office or storage space, too. In most homes, beds are competing for space with anything from an ergonomic office chair and printer to those bags and boxes you can’t bring yourself to sort through (we’ve all been there). Sofa beds have often got a bad rep – think clunky mechanisms, bumpy seat cushions, and paper-thin mattresses – but the latest designs offer stylish solutions for savvy space-savers. The best furniture brands have evolved sofa beds to combine shrewd engineering and high-tech memory foam mattresses , from modern click-clack (or clic clac) styles to more conventional sofa beds. Every type, however, has their pros and cons – and it’s all down to personal preference and the designated space you have.…