Traditionally, fireplaces were considered to be the optimal central element to your living room, but in modern homes, this is unlikely to be possible on account of space limitations! But it's important to remember that the intention of your living room will be inviting to people, to get them to feel comfortable and relaxed, and stimulate good conversation. So, even without a central fireplace, making the fireplace some sort of center point will also work well. Mirrors are a wonderful tool to enhance Feng Shui in a living room. They bring light into darker areas and might reflect aspects of the area that visitors might not exactly otherwise enjoy. Mirrors make rooms look larger (and lighter) and very usefully, they could reflect the door, so any seating that cannot face the entrance can still have the door visible through the use of mirrors. The best placement for the mirror is where it might reflect a beautiful view, but once again, we need to adapt this principle to modern cities and homes.