I'd replace your coffee table with a large upholstered ottoman that you could pull out to face the sofa for people to sit on when you have company. Then you could get a couple of c-tables for either side of the sofa to put drinks on.

In a previous post, you mentioned that bench seats or Ottomans are not comfortable for your older guess and family matters. Did that change?

The tufted bench or ottoman Kendra posted above would add some needed texture to the room. Otherwise, if you have dining room chairs, just use them. The new rug will also add warmth to the room.

Yes, on the swivel chair. It seems as if you only have room for one more chair. as for color, Do they have a color that matches your recliners? that would balance out the room. Unless of course you’re going to replace the recliners with white ones. If they don’t have it in colors that would match the recliners then the dark blue close to the color of the couch would be better. Adding A white piece of furniture in the room would throw off the balance.

If you’re going to replace the recliners then yes make sure that they are all the same color. Three chairs the same color. The type of material is your choice. I suggest that they have Scotchgard or some type of fabric protection to help with any future cleaning or spots. Since you have a white floor, you could get a rug with some blue in it that would pull in the colors of your couch and kitchen counter with white in it. Best of luck and best wishes.

As suggested earlier, you could get Ottomans that match the new chairs and use them as extra seating when guests arrive.