I would paint the entire fireplace including the mantel, all trim and shelving white. I like the Whisper White, but you must bring the paint samples into the room to see for yourself. The sheen on all woodwork should be semi-gloss, easy cleaning and looks crisp. I agree with painting the walls and I would paint the part above the mantel the same color as the walls, Summer Hue is beautiful, but once again I have no idea how that would look in your room. The walls should be flat most brands make a fairly easy to clean flat. If the fireplace were the focal point of the room, it could look very cool and dramatic to paint it a very dark gray almost black. But at least in this picture it seems that the entertainment/shelving unit is the focal point. hmm .... better stop while I am ahead.

Either wallpaper or that suede textured paint that was kinda trendy 10 years ago

Hello Nisha, Laminate will not fall off if the adhesive is used properly. Avoid regular heat and water contact. Merino, Green, Century are good brands for laminates in India. Thanks Nitin Cornerstone Designs Bangalore

You need to mention your budget for us to advise a suitable method of which there are countless. Whatever may be the method we try, in retrospect it would only be secondary to real concrete and therefore would lack the solid raw monilithic almost indestructible character. The second reference image looks like a tile. The first image is a textured wall which can be achieved in several methods and quite obviously the price will go north the more you try to get closer to the real thing i.e raw concrete. Look up Dulux concrete effect as an easy method. In any case in our country the easiest method would be to use fibre cement boards and engage a wall texturing specialist to create the concrete texture as in the first ref image.