Remove the clutter from the room before you decorate. Get rid of items you don't like or don't use, as well as items that are broken or damaged. You can donate used items to charity or hold a garage sale to get rid of your unused things. Simply clearing out unneeded possessions will quickly make your multifunction room seem bigger and free up extra space.
Select furniture that can serve multiple purposes. Choose a futon instead of a traditional sofa, since it can be used for sitting or sleeping. Opt for an entertainment center with drawers that can double as a dresser for guests.
Hang pictures, posters or wall hangings that are pleasant to look at and that complement the color scheme of the room. Opt for neutral paintings or relaxing photographs. Keep your wall decorations minimal since too many decorations can quickly overwhelm guests and visitors and give your multifunction room a cluttered appearance.
Choose an area rug that complements the colors of the room but that can handle lots of traffic. A multifunction room will typically have frequent use, so choose a durable, sturdy carpet with stain protection.
Incorporate shelves into your room to store books or other objects you need to have within reach. Add floating shelves to the walls or employ a full-size bookshelf into your room, depending on your available space. Instead of filling shelves entirely, leave empty spaces to make the room look bigger, neater and cleaner.