I'd love to help! First, Could you briefly describe how you want feel (mood) in this space? You may consider providing pix of your furniture. Also--regarding colour scheme, it's always good (in addition to complementing your existing furnishings and floor--hence reason for pic request ) to eliminate colours you absolutely DON'T want in there. I think if you provided context to the above, you may get some pretty good responses.

The DIY concrete floor finishing products are rarely up to "snuff" for a living situation. Most are meant to be put down in a garage where it doesn't matter if it bubbles and lifts in a year or two. Many have failed because of wrong application technique, wrong use, wrong product for the concrete, etc. A finished concrete floor in a new build is a great option. The concrete professionals will get the surface ready for polishing. The concrete floor finisher (may be a different person than the guy who installed the slab) will come in and clean/shot blast the concrete and add a layer of appropriate, high-end, high-density concrete. This concrete is then stained (if you want it) or if you want simply polished and coated with appropriate epoxy. It may take more than 1 application of the stain/epoxy to get the look you are after. This is not a "money" saving product...it is a lifestyle finish that is equal to (in price) other medium/high end finishes. It is very important to understand the quality of concrete seen with a normal slab/subfloor is NOT good enough to be polished and stained. That's why a new coating of high-end stuff is added to the slab. This high-end concrete has all the right properties to receive stain/polish/epoxy.

thanks guys. I agree dark green gives a closed look. I realized that a little too late into the game and not much I can do about it now. I have a lot of antique wooden furniture and will try a walnut finish on them. will post pics if it turns out to be presentable.

Hello, You may have to remove them , take them to nearest timber get them planed and then reinstall. after planing you may have to buy few additional pieces to cover up the material lost in planing. Otherwise, If the gaps are not very big you can try filling them with metal paste or wood putty.