It is simple to make a cool room for all guys or single men. You just need to try some cool room ideas for guys here and then get your cool room. First we need to focus on the accent wall. You can use room painted with mural or play with some colors. Second, you need to use space saving furniture so all things will look tidy and all women who enter your room will think that you are awesome man. Third you need to have theme for your room. It is good for you to show your collection or your hobby from the painting, and decoration inside your room.