If yours is a small entrance, don't clutter it with coat racks, chairs, or accessory tables. Remove these things and your entrance will appear to be twice as big. Other things that make a room look smaller are dark colored walls and floors, too many pictures on the walls, and clutter. Repaint the room in light, neutral shades and remove all but a few well-placed pictures. Or, instead of pictures, hang a large, well-placed mirror.
Mirrors create the illusion of space.
Another space enlarging trick is to harmonize the color scheme. Too many colors in one place create a busy look. Simplify for the eye with light colors and one or two accent colors. Buyers want to feel that they're getting lots of storage space. Go through all the closets and clear out anything that you no longer use.