Another thing that photographers will tell you is to use natural lighting whenever possible. You will, however, want to stay away from an overly bright window as it can lead to problems with exposure and white balance.
Keep the window off to the side. If too much light is coming inside, draw the curtains or shades. Never photograph into the light, but bright light in the background is superior to indoor lighting. You may want to shoot your room at various points throughout the day to see which lighting is best.
A general rule of thumb is that Eastward rooms should be taken in the morning and Westward in the afternoon. Rooms with Northern and Southern exposure should be taken when the rooms are their brightest. It’s best not to shoot on a dark and dreary day. If rain is in the forecast, try putting off the shoot, if at all possible, until the sun begins to shine again.
For a gentler, softer light you may prefer to photograph your room at dawn or dusk when the sun is just rising or just about to set. A sunset can make for a magnificent interior photograph. If a flash is necessary, if you’re photographing at night or on a darker day, use a flash that has an adjustable head and point it up toward the ceiling to bounce the light from there to create a more diffused light.
Reprinted from freshome.com