None at the height all you will be reflecting is the ceiling and why is that firebox so huge IMO that wholewall painted a different color would be my choice.

No room for a mirror there. I like the idea of painting the wall, maybe a dark grey or dark slate color to minimize the fireplace surround.

I'd go with artwork to brighten up the space instead.

Patricia, I don’t know why it is so big, it came with the house. Thanks everyone for your thoughts. I thought nothing would work in this space either but then saw this pic on Pinterest and then thought oh maybe I could put a mirror here to brighten the space up since it’s a little dark. Wallpaper sounds intriguing 🤔

I was also eventually going to add a shiny live edge mantel

Olychick, I love that wallpaper!

I am trying to see a reason for even keeping it ...is it an important feature to you?

If you want to use a mirror, put one on the adjacent wall of the dining area so it faces the outdoor area and windows. That fireplace shouldn't have a mirror or art over it. I agree with others that a dark wall would help it blend better with the rest of your home. You could consider the same deep blue as your sectional, on just that one wall.

The actual firebox I didn’t think was that huge but maybe the fireplace surround is? Here is a better pic of it.

Btydrvb, I’m not attached to it but I guess I didn’t think it was bad looking and I’d rather work with what I have that have to spend more money and time ripping it out.

I don’t think your fireplace is bad at all. I don’t think a mirror accomplishes much. I’d do a wonderful piece of art. You have what looks like great art in your adjacent room. I guess because I love art so much I think you can never have enough.

No need to rip it out...just cover it up...

The fireplace looks much better in the close up photo. From a distance, all you could see was a big black box on the light wall.

I dont think you need art or a mirror, but I would paint that wall a color closer to the surround color and let it be a stand alone modern feature.

btydrvn, what do you suggest I cover it with?

Your fireplace surround looks good in your close up pic. I don't see a need to cover it. It's a minimalist modern style. Is your fireplace functional? What are the blue stones at the bottom? You mentioned wanting a mirror because it's dark - is that room dark? Perhaps a mirror would help but it might serve you better in another spot in this room. We'd have to see the whole room. I agree that the space above this fireplace doesn't seem to lend itself to a mirror. Your pics show a lovely house with great style. Btw, can you tell me about your window shade? I really that look. Is it a solar one? TIA!

I think it's really pretty in the close up. I would not cover it up...