One reason the house feels uncomfortable is a dark and lacks of light. If the room does not get a lot of natural light, don’t think a major renovation to lighten the room up. Just simply make the room brighter with simple tricks in decoration. You can also use brighter color scheme.
Another way to make the room brighter is by paying attention to decorating details and accessory use. Use bright decorations in your home like colors and textures as the complement. Hang a large mirror that is opposite with a large window in the room. Some windows are also the easiest ways for natural light coming to the room.