Can you attach a photo / link of the sample of the floor tile being used?

I think your colors are restful so I would work with those and not pop a color. Maybe some interesting artwork that had some color in it, but I think you should go for a more elegant calm look. By the way, I like the chandelier you have with the fireplace. I think I would paint the lower part of your wall the same blue as is in the top part. Then I would add some black accents in glass and lamps. Curtains that have a sheen or gold thread would be nice.

Gorgeous sofas! Would you consider using the Thibaut print suggested by Judy G Designs in a soft fold Roman shade? You don't say how many windows there are in the room. But Straight edge on the bottom, outside mount, clean and simple. The print has enough activity.

Thanks jacksplash, was going dark but I have floorboards painted the same colour as the stairs is currently, on the landing too and these would then have to be dark also. Worried in case that would make the whole space too dark. Today I was considering a colour darker than the marble on the wall but somewhere on that tone, which could work better upstairs. Questions, questions??? It's the last place to be painted since the renovations but painters leaving next week so I need to get a move on