It's very easy for a small home to feel claustrophobic. To ensure that the walls don't appear to be pushing in on you, you want to always be leading the eye further into your house. Glazed internal doors are ideal for this, even when they are closed, you can see into the room beyond, plus they bring light deeper into your space too.
You'll find both modern and traditional glazed door styles that can be varnished, painted or bought ready to hang. They are perfect for every room, except for bedrooms and bathrooms, where more privacy is required.
Just be sure to opt for toughened glass and the largest possible glazed panel.