definitely some nice and big green plants! Anything alive (flowers, a bowl of fresh fruit) will add the missing link without fighting against the nice and clean design.

Looks like a computer rendering of a room with unlikely architecture. I suggest using the fireplace wall as the focus instead of blocking it with furniture. The bar cart is not in a usable position. Adding art, a less-invisible rug, and window treatments would bring in some much needed personality.

life

It's missing a lack of red & black. Sorry, just not my two favorite colors together. They were my school colors too. I keep seeing pom poms or game jackets.

Looks to me like robots live there. Add something warm, human and not grey, black or red.

Charm.

Window treatments.

Window treatments to soften the room

a piece of original large wall art...add more color and life to your artwork....

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@Lori East- Wow! You answered the question and win the prize!

Looks like you do super modern designs, but frankly this looks like a computer rendering with stark lighting. If your client is looking for this look, then go for it. I think it's a little early 80s.

Too cold/sterile