I have my 55 A9G in my bedroom, with 3 solid walls and 1 giant wall sized window. If i had the blinds open during the day, it would definitely ruin my viewing experience. With the blinds closed, daytime viewing is perfectly fine. Even with a lamp or 2 on, the A9G is fine. Just keep in mind OLED’s excel in the dark, and look great with some minor ambient lighting. But if your wall of windows flood the room with daylight, or you like a brightly lit room at all times, an LED TV may be more suitable to your needs.