It is not the size of a home or the stuff in the home that matters. What really matters it how the space is used, and if the “stuff” has meaning, importance, or serves a purpose. People often get caught up in making homes bigger than they need.
So where do you place the TV in your main living space when you have a fireplace? Based on the research I have done (in addition to extensive television viewing), the proper mounting height for a TV, for viewing from a seated position, is at your seated eye level.