Do you have photos of this long column ?

Hello, I feel that you can design this bedroom by having 1 opaque wall at the back, and 3 transparent walls using glass & steel or glass & wooden french doors. The walls should be white, with minimal accents of blue or green, use 2 layers of curtains with sheer, and brass hanging lamps. All doors can be white PU paint. Waterproofing this bedroom will be essential, so make sure you have sealed all joints and surfaces, with a minimum of 2 feet roof overhangs. Hope this helps! G

The hassle with square wood-look tiles is that they look too artificial. The only way to avoid that would have been to lay them with the grains alternately- vertical, horizontal- in a chessboard pattern. However, you do get tiles in 6" x 24" which you can lay in a break jointed pattern as shown here. They mimic the look of decking planks

I am guessing you don't wish to finish the exterior with a plaster. So the next best option according to me would be to extrude the column outwards by about 1 feet with a fabricated structure cladded with ACP, Cement sheet, composite exterior panels, or any other surface/material of your choice. Goodluck! I hope this was helpful.