your tile installer will need to advise you as to how close they can get it. It will depend on several things, mainly thickness of materials and existing subfloor. Hope that helps.
The side tiles butt into the back of the face tile. The face tile also received a bit of a chamfer to soften the edge
fireplace wall tile is a honed travertine 12"x24".
I love how the fireplace looks, what tile did you use?
If you plan on installing a hard floor, such as tile, the subfloor will need to have a grout base on it, not necessarily concrete. If you want to set your new floor in line, or close to level to your
edge of tile on fireplace as I see you did not wrap it around? Use a pencil ?
love the travertine look of the tile.