groveraxle, Thanks for the photoshops. That actually has me back to considering the light grey concrete one the most as it seems to match the overall asthetic better than others I am considering. May not be as thin as what I would prefer but the singlular central base feels like a good compromise.

Nothing is impossible, but it will likely involve compromises. 12' by 12' can either be a dining area or a sitting area, but not both at the same time. If you're going to want to use it for both dining and sitting on a regular basis then you'll end up spending a lot of time shifting furniture. I had a similar sized room that we used predominantly as a sitting area, but would convert to a dining area about once or twice a month. In order to do that I had to create a coffee table that would double as a dining table. I ended up building a 3' by 4' coffee table where the top folded out to a 3' by 8' dining surface. I then built legs that I could adjust from coffee table height to dining table height fairly easily. It would take about two minutes to convert from one to the other. The dining table was not particularly attractive, but nothing a table cloth wouldn't disguise. For chairs, we had two wicker sunroom chairs that are comfortable to sit in and could be used as dining chairs also. We had two smaller, quite light armchairs that could be moved to one side or out of the room altogether. And we would move other chairs from the kitchen to seat the other diners. That set-up worked quite well for us, as it was for occasional dining use and for sitting the rest of the time. It was not our main sitting area, so did not need a sofa or particularly formal furniture. As I say, it involved some compromises. Without making those compromises, as Patricia says, 'the answer is no'.

That is gorgeous!!! You have incredible style. And so does grandma! Two thoughts - Either, go with the “U” shape and put the grandma couch in a different space ( this is what I’d personally do because I feel like the navy one can be such a showstopping piece in a smaller space with not much else around it. ) Or you can skip the added piece and leave it as is. You do need a very big , heavy looking coffee table. I would do one. Again, stunning space!! Can’t wait to see what you do...

It looks as though the first thing you might want to do is figure out a better layout for your furniture and declutter. Once that is complete you should be able to find pieces that will work wonderfully in your room. It might be a good idea to look at some of these living room designs for ideas on coffee tables and other sofas.