Either material can be made to look and feel beautiful, but the photos show the worst of both. I love baltic birch plywood with exposed edges, but it must be sanded smooth and clear-coated with a satin finish lacquer or urethane. Concrete (my passion and my business) can be tinted to give it a warmer shade, and either cast against a super-smooth surface or polished to make it smooth. Bedroom walls need to look and be touchable. The ones in the photos give me the shivers.

Nice of you to put such specific consideration into their needs! I would think that timber blinds or white timber blinds (venetians, which are much cheaper than shutters, but can look just as good. Because they are easy to clean, but mostly because teens tend to hide out in their room, sometimes this turns into a cave and they don't really care about opening the blinds each morning, also, they are particularly concerned about their privacy and sense of space, having blinds means they won't ever look messy and the most you have to do is open them up, and if they are tilted a Articular way, they still provide them a private blockout while letting the directional light in. I would also do a timber floor for a both, as they are likely to traipse in wearing shoes that of course are full of stuff from their adventures. They play sports, may spend time outdoors and timber floors scan be easily cleaned, carpets are ruined. As for a girl, if she has different interests, or spends time in her room often, a carpet rug on a timber floor. Rugs can personalize a space, so they have some saying the decor, and easily replaced, maintaining your timber floors beneath, while providing warmth and comfort. Even if covered mostly by furniture, the edge of a rug underfoot will feel more comfortable than not.

I agree with the above comments. need to look at colours and wall coverings as well as adding decorations with mirrors, pictures etc. What type of style and colours do you like? I would use your likes as a means of starting a picture board with things you like. My oldest son is nearly 20 and I am only now reorganising my house to suit the adults living in it. take your time and enjoy your creative inspirations, get ideas from books, TV and magazines, but don't go for trend, go for things that say "you".

I admire darker shades in carpets when matched with a pastel - like this example