The lighting in the picture is so murky I can't tell what is on the floor. Is there a rug, or are those wood floors? If a rug, it is lost on the floor so look for something with more definition. I would also paint the room a color other than a neutral. Are there any colors used in adjacent rooms that you could bring into this room? Some roman shades or drapes would help soften the look and possibly bring in some color as well. Here are some pictures of dining rooms that have traditional furniture with a modern twist.

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Agree with a new rug with color/pattern. Also, remove some of the chairs from around the table. All of the furniture while nice, is quite dark and the table and chairs are sucking light out of the room. I would also consider painting the room a different color once you have a new rug and can pull a color from the rug on the walls. The current color is safe and bland. I would also consider adding drapery panels in a color/texture pulled from a new rug. Finally, I don't think your light fixture is particularly flattering...I think you can do better. The room has potential to be awesome, just needs a little tweaking.

Yes, there are hardwood floors and a jute rug that I ordered and I should have gotten a smaller size. The light fixture when we moved in was a small builders-grade fixture. The new one is from RH and quite expensive but I agree that it's not my fave either but I'm stuck with it now, lol.

I added pics of the adjoining formal living room- which also needs more decorating. We have been here a year now and I am not good at decorating!!

Some thoughts:

--Great suggestion to remove some of the chairs to lighten up the space.

--The rug also pulls down the room. Do you feel you need a rug at all? If so, a high contrast pattern might work better but more abstract. Here's link to West Elm indoor outdoor Halva rug shown in photo. https://www.westelm.com/shop/rugs/outdoor-rugs/ I always suggest ordering the smallest rug to test then sending it back for larger one. Since dining rug is for under the table, order flat, tightly woven rug. Not sure the one below fits the bill, but it's a good idea of the kind of rug pattern that would make the room livelier.

--Love your bay window. Maybe set up a window bench below windows with small table in front of it?

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Or plants and your armchairs in front when not in use. (Still think you need to move at least 2-4 chairs to get rid of board room feel that might be bothering you.)

Wow @BeverlyFLADeziner that rug is beautiful. Makes the room look great. Love the ceiling idea.

The rug doesn't have to be a specific color to work, but it has to be strong enough to stand up to the heavy weight of the furnishings in the room. This color would work also.

Great suggestions already - I would change the chandelier to something more refined (it feels a little too casual for the room/furniture)

IMO the cabinet does not work in the space and achandelier change is IMO a must. Get a nice simple buffet that works with the LR decor ,I like the chandelier in the one pic so sometning that goes with that and please down lights that actually light the table. A nice pal blue for the inside of thetray ceiling. Your art in the LR needs to be lowered.IMO the LR and DR look like 2 different homes so maybe along with a simple buffet you change the chairs to something more like the MCM vibe in the LR

The first thing I’d consider is how to meld two very opposing rooms’ styles and suggest addressing dining room first, given it will be more difficult. Hope the concepts below help and if not liking the actual choices, just consider your comfort level and taste. Think big picture, so I’d paint both rooms a fresher, lighter color and add rugs that create a connection.

Dining room: could paint the ceiling, slip cover the chairs, and replace the pictures. A big issue is how dark and heavy the room feels and I think it could be transformed and help tie in your chandelier and living room.

Interesting sets of vertical prints on both sides.

If brave, replace sideboard and you won’t need to slipcover chairs to achieve a lighter feel in room. An eclectic room will merge a traditional feel into a more refreshing look.

Living room: rug and cushions that connect with dining room and lower the art.

I don't think the rug is too big for the table, BUT the table and rug might be too big for this room.

If you get a rug that is narrower, then it will also be shorter and the end chairs will be off the rug.

If you have good oriental rug dealers in your area, then you might be able to find a more suitable size, because hand knotted rugs come in more unique sizes.

New rug for your dining room. Or match the rug that is in the other room.

I think you could place your two chairs in the bay window with a little table inbetween. It would be a nice place to sit and have a coffee with a friend. I agree that the art pieces should be vertical and perhaps a nice rug with some pretty colours in it would look nice.