Armoire Wardrobe

Good, so we bought a beautiful antique French cabinet, no mirros all but you can say is a wardrobe, he would always look good if I put it in the living room as a decorative element?

Sure. Use it for storage [linens, books, music, games, etc.]

Sure you can. But try to complete a table similar style or decor small wall near him. You can even fill the sofa with some pillows nearby French-style covers for your cushions.

Absolutely. As long as your backdrop of life is not totally opposed. If you already have a French style, or an eclectic mix, in your living room there is no reason why you can not put your wardrobe in there.