The way that is most effective in making the guest impressed is by making your room look absolutely comfortable and inviting. The room of a house expresses the tastes of the owner and that is why you have to think before you do up the room. If the room is not a big one, you should not go with furniture that is too big. This will make your room look cluttered which would not do any good for the look of your house. The most important thing that a living room should have is nice couch.
Now, a small room cannot have a large and extensive couch like the one you see in larger living rooms. You have to be intelligent while choosing the couch for your small space. Choose a small couch that will fit the size of the room and will be comfortable at the same time. You can decorate the couch with nice looking pillows. It does not matter if the couch is big or small as long as it is comfortable. You can also use a couple of beanbags for your small room, as they are comfortable and quite trendy.