Installing this Mendota Swedish Nickel Arched Frame Fireplace in a Living room with Gray walls and windows on either side of the fireplace. Looking for a contemporary look, I've been drawn to porcelain or small decorative tile but I don't want it too look too busy. Will have a TV mounted above and a 10" mantel.

This is where the fireplace will be installed and we will also be getting hardwood floors after the install.

Thank you in advance for any recommendations!