What about mosaic tile? Lots of colors, styles, sizes, and finishes to choose from. You can also mix tiles or keep it simple and uniform - whatever you prefer! This fireplace was done in a single color of iridescent tiles, very sleek and modern! (other colors available!)

I don't see the point, just like T.V. How long do you really spend in there anyway. Maybe once in a blue moon it would be nice but really? To be perfectly honest I don't understand the fascination with the huge bathrooms that need hours to clean, I would rather save that square footage and use it for something I would actually need like a bigger walk-in closet for instance. I live in MCM house we have 3 bathrooms all small and I love them. They are easy to clean look great and what we have are nice big rooms that actually function well.

also have uploaded a photo of our piano and mirror which I love. and I photo of our dining room light which I would also like to keep there.

If you are going to the effort of retiling the fireplace surround, would you consider going to a bit more effort and creating a full wall unit which incorporates the fireplace and the TV, with extra shelves and cupboards to display and store? (I also have reservations about the heat and the TV and associated wiring.) This may also address the lack of symmetry associated with the location of the fireplace, if that is a consideration. Do you use the fireplace often enough to justify keeping it? Alternatively, a wall unit on the left hand wall, which is where the power and TV points seem to be, may be the best solution - as previously suggested. All the best.