Tailor it to your needs
The furniture you choose will depend on how you use the room. Keep in mind that the storage elements you introduce, such as shelves and cabinets, will have to take into account the slope of the roof: a custom solution will make the most of every centimeter; a standard solution risks leaving huge gaps at the edges.
Colors
Choose colors that fit the intended use of the room and the furnishings you have chosen. Pale colors tend to be more popular in this type of space, mainly because there is not as much light available. You can use accent colors to highlight certain elements, such as the fireplace mantels. If the space is especially small, you’ll need to pay special attention to spacing.