How to find a rental bedroom. Finding a rental bedroom requires simple online research. A person can use online research tools to find the best bedrooms within the chosen location. Alternatively, a person can leverage his or her contacts to find a place. Most people who are open to these new and innovative products are young and digitally connected. They can check online for opportunities in real time. Even major listing companies have bedroom rentals as a searchable term. Social media is another great option with listings constantly coming up.