There’s a lot to be said for the work/play energy of a nice studio or other small apartment during the day. But how do you bring that energy down to get a good night’s sleep? With electronics, cookery, clothes and books all in one space, it can be a challenge to create a restful refuge. Design and sleep experts have some tips: Prioritize a sleep space, starting with the bed Everyone needs good sleep to stay healthy. “The primary rule, maybe the only rule of small space design, is people have...