Since you have a limited floor space, do things vertically. Just like this picture, use the walls to store your personal things. You can attach a floating shelf in one side.
As explained previously, it is important to have natural light enter your home. This is why avoid furniture that blocks the light in your room. This can make your home dark and dull.
Try making a foyer for your home. If you do not have a little entryway, this is a nice alternative. All you need is an old bookshelf for this.