Of course, another aspect to a bed is its very size. Double beds (even childrens single beds) are large items. They dominate a small or even medium-sized room. It is imperative too that your bed is stylish and attractive, as well as comfortable. Nobody wants an eyesore in their bedroom, which is a highly private and personal space.
If you often have winter in your place, try to choose those that can give warmth like flannel sheets and down comforters. If you live in a place where the sun always rises and gives heat, then you may need to use satin and silk which are cooler on skin.