Pick Neutral Palettes
You may be tempted to express your own design taste in your space, especially if you (or a family member) owns it or you’re the longest-present tenant, but that may not always be conducive to roommate satisfaction–especially if your tastes tend to be a little edgy.
Rather than force your passion for leopard-print tapestries on everyone you live with, stick to large features that are more neutral, such as sheer or pastel curtains and un-patterned rugs.
You and your roommates can work together to add details that bring personality to the space without going in any one design direction, and everyone will feel like they have some say in the space, removing any tension caused by one roommate holding all the design control.