Try this......move the ottoman where your coffee table is now just to see if a darker plane will give you the "anchorage" you're looking for. If that does the trick then you can either purchase a new, dark coffee table or paint the base of your existing one. I think adding an area rug will make the space seem too closed in. I like all your colors.

caligirl5, thank you. The rug is from eSaleRugs. I don't know if it's still available. The nice thing about this company is that you can return a rug you don't like without having to pay a shipping fee.

I would not hang the smaller pictures with the larger. I would hang the larger one alone, however it is not large enough as is. Something hung over the sofa should be 3/4 the width of the sofa. You can have it an additional mat or two added and a different frame made. This doesn’t have to cost a fortune. There are places where you do this yourself, for example, The Great Frame- Up. Using multiple mats allows you to pick up colors in the art piece and you can use them to determine the direction you will go in colorways for the accents in the room as well. You can have a slim inner mat in one color and a wider mat in another color or white and a wider color in another color or white. And give this piece of art the wide important frame it deserves. As far as a rug, the earlier examples of vivid rugs with combinations of colors look best. The other rugs are just drab and look like a snooze and like you threw down any old thing just to cover the floor. You might want to think about getting a sofa in a light color such as white, cream, or other light colors, and getting throw pillows in colors from your art piece in delicious textures like nubby prints and and velvets and folded silky fabrics and a marvelous colorful piece such as a big pouf in a colored leather or nubby knit to use as an ottoman or extra seating.

There is nothing wrong with their floors. There is nothing wrong with yellow and gold. If you do not understand and/or like the wood and colors, you really cannot help them. They would absolutely need a warm white for the walls. Not a cool white. They have a house full of warm wood. And I gave you some warm white paint options in my comment above. It also looks like a house full of children in these pictures, and the best coffee table to have with children is an ottoman style. It is also on trend and has been for a while, and it is a style that would work in their space. With what I can see of the sectional shape and style, I think maybe a large square shape for ottoman. Many styles and colors, this is just one example: And maybe a couple of these ottoman style cube type pieces on side of room, for extra seating. https://www.wayfair.com/furniture/pdp/east-urban-home-south-bend-stripes-cube-ottoman-w002480563.html