That is HUGE! You need to decide what you need or want in there. Do you want a home gym, play zone, office, game room...? If I had that space, I would put in a home gym but that's because mind is in my 3rd garage.

We have a gym down there in a different room. So, this would be an area for entertaining or possibly reading/game area.

Robert, I think you may be onto something with breaking up the sectional because it seems to close off the area as it is now.

In addition to the pool or gym, I really think some rugs would not go amiss. They add colour and character.

I like your bar and table and chair arrangement - a rug underneath the table would tie it together and definitely larger artwork on the wall (perhaps three of the same size to add colour).

Your sectional area needs a bigger rug and either an ottoman or coffee table preferably with a nice tray on which to place books, items etc...

If you wanted to go for an accent colour would a muted orange (rust) work? But nowhere near the wood elements in the basement - perhaps on the far wall at the end of the two columns...

Some ideas:

I would hire someone (decorator) to give you a full legit layout plan. Many will actually work remotely. That room is significant and you are going to have to pay $$ to rip out items, etc., it should be done properly the first time. Look at some of the designers on this website and if you like their work, hire them. I'm completely serious. There are several really active houzzers that will probably help remotely.

Speaking from first hand recent experience (My master bathroom is being tiled now) , once iI got a designer involved in my master bathroom, things moved along quickly. He had many new and fresh ideas that didn't exist in my brain at all. Your room is awesome. Get it done right.

I think the stairwell area you're concerned about, where the bright art is, would make a nice reading, study and game corner. Add bookcases to the stairwell wall, two comfy reading chairs angled between the painting and the pillar. Also put a small game table and 4 chairs in this area. add a long area rug to fit between the wall and the pillar. In the tv area, I would pull the love/lounger part of the sectional away from the rest and float it on a 4 degree angle next to the pony wall. It will still face toward the tv but won't block things up so much. In the bar area, I think you can use a console or credenza under the piece of art. Make sure it is wider than the art. Can't determine what is going on in the corner by the French doors, but that could be a small home office space or just a quite corner with a couple of chairs for intimate conversation. If you have kids, it could be an area where you install their Wii, or other gaming system, away from the tv area. If you already have more art, you might line it up on one wall and post pics for help on how and where to hang it. I don't mind the copper and I like the paint color, but you might look at some Frank Lloyd Wright interiors for ideas. Lots of your woodwork color shows up in his homes, so you might see something you like. Green would look especially nice, I think.

Here's an inspiration for your color. Arts and Crafts homes could give you more inspiration.

it's a big space - invest some time to plan what will work for you all as a family - there are lots of great ideas on this thread already ! I can think of a few too - do you have the architects plans showing sizes etc... and have you sat down all together and discussed the things that would make you all happy ( disco area, cinema, gym, sewing room, art room, etc etc etc ) plan it all out, or if you need a hand, contact either a local designer or someone like me who works remotely - to help !

Mr Robert Sarnovsky has the best advice - decorate in groupings using rugs and chairs and tables, plants etc. Stop looking at it as a basement and make it an extension of the rest of your home. Decide what you need that space for first. You might want to move a room that is not working upstairs (not enough space) into part of that large room downstairs. The one thing you want is an inviting WOW factor when guests are invited into it. I also agree with Calakym a good designer can help you with this. They are really worth what you pay them if you find the right one. I would use the Houss "Find A Pro" and look at the work of the Designers in your area. Look at the photos they post, this is what they think is their best work. You may not know how to decorate but you know what you like when you see it. When you find someone whose work you like that is who you should call and schedule an appointment with.

Old post from 2013. If OP is still around maybe they could update.