Some ideas for that small room in your home. Make this room useful, decorate it and invite a family member over give them there own room.
You may have more than one person over and it has gotten late, bad weather, maybe a little to much to drink so this calls for a sleep over but where are they going to sleep on the couch, floor in your room, no none of these places because you have created them the ultimate guest room. This is a great way to use that small room.
You may want to give your guest a little more bit more of a bedroom / living room feel. They may want to do some work so give a desk, watch some television add a couch that can also pull out into there bed. Then you will have a complete room that will make them feel at home.