One of the indispensible features of a duplex is having stairs inside the house. While indoor stairs may be made into a beautiful feature, they have an unlikeable characteristic which is eating up lots of space. One can easily fit in as much as a room in that space! So why not do something like that? While we have given a small hint here, a full-fledged article awaits you at the click on the link below. There you can get plenty of ideas about how to utilize that space along with pictures of the same that will show you how some people have made intelligent use of that space.