Perhaps changing out those ceiling fans to something from this decade would help. do you have to have fans? if so, try something more transitional looking.
The very dark tv console doesn't really work. I'd go for something lighter or more natural wood looking, and make it a tad longer. hang the tv on the wall.
If you must keep the stone as is, I'd go for more of this look.
Even a slight mortar wash or lime wash could help tone down the bossiness of the stone
This is Romabio classico wash. comes in 7 diff shades.
do a nice mantle and cover up the middle niche w/a large piece of art.
Here are some other pics of limewash
and an actual mortar wash (ChrislovesJulia did this one)
or german schmear application. you can do heavy or light
I love the overall look of this room and would copy this in heartbeat to your space.
I'd also paint out the ceiling. you have a lot of wood/stone patterns battling each other. The ceiling already looks whitewashed, might as well just do the whole thing.
some diff applications of mortar
(if you really want to save the stone, you could cover it w/simple drywall, or fir out the whole thing and do something different.
Q