You could add drapery panels on each side of the columns...sort of like the look you see in outdoor panels these days, but indoor..surrounding the dining area. I would think a pair between the dining table and the living room, and another pair between the dining room and where you stood to take the photo..sort of enclosing the dining area. Do them in a solid color close to the wall color and it should obscure the columns.

Hello again! You could hang a mirror on it to reflect the room, and to disguise the fact it is a column, or you could bring a contractor in to see whether it is load bearing, and if not, how much it would cost to remove if it bothers you. It is a very pretty space!

I like your idea but if you can send me a picture more clear to understand it PLEASE!

HI -- The best trick for columns like this and I've done it before and it always works . Have them mirrored and they will almost disappear. Get a glass company in to measure and give you a price. Might be worth it to you. Best not to wrap them with fabric or hang pictures or anything that would just bring attention to them. Mirror is the best way. Pretty sure it is supporting and cannot be removed .

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hope it helps

The more you try to hide the pillars the more you will call attention to them. There are a lot of cold surfaces in the space (windows, stone floor and bare walls). If you address these issues you will take the focus away from the pillars. You have furnished this room with all outdoor furniture with great texture but it could use some warming up to give it more of an indoor/outdoor feeling.
You could add sheer linen curtain panels on each of the windows, not to skimpy. The panels should have enough widths of fabric to look like they are fully working. Fabric will add warmth to the room and frame your views. Then I would add a large area rug in the main seating area to make it more inviting. I can't tell if there is a coffee table or not but if not then I would add a large square or rectangular coffee table in a different material from the rest of the furniture or a tight topped upholstered ottoman. A large scaled painting over the sofa on the blank wall would add interest. Bring some of the turquoise of the buildings exterior and railings into the room with art and accessories. I would also place a floor lamp or table and tall lamp on that same wall at the end of the sofa. Or you could hang some large scaled contemporary light sconces on each side of a painting on that wall. If you do not have electricity there then they could be large pillar candles under glass on a bracket. The dining table is quite large so you might consider a pair of large scaled hurricane lamps spaced in the center of the table to get some height (large clear glass cylinders over a candle). These and the wall lights would add drama and romance to the room at night and decorative elements by day. I would also consider painting the pillars, beams and walls a deeper color like a mocha creme or even the same green as the sofa seat cushions.

Thanks for the suggestions, take a look of my columns now

Those look great! Now they are a design element of the room, and oddly, they don't seem to stand out as much as they did before -- they fit now! Good work!

What color you suggest for the walls

They look wonderful. they instantly make the room look more put together. great job. I would think a very pale turquoise such as a watered down version of your exterior walls or BM spring green that would work with your green furniture.

agree, you already have a great palette going, pulling in a more subdued version of the outside wall sonds great.