Hi, your home looks pretty good, you have done a lot on the interiors. Coming back to the question, yes, you can add a wallpaper behind the television, go for a textured wallpaper as it will create a compliment to your television. As you have decorated with wooden elements, you can go with a bookshelf on the wall. And, there is one more thing which will be a simple addition but will look perfect and that is an antique wall clock. An antique wall clock will make your wall look great without any fuss.

Ok, don't like the dark cushion, don't like the TV in the bedroom. You could go for pendant lighting using the same 'material' as the mirror? If you went for larger beside lamps while you have that mirror there, they would be fighting each other. In the programs I watch, they say to have 'a hero in the room'. In this case the mirror is the hero I think. Also the extra throw cushion for the bed could match one on the chair, so it ties in (or don't have one at all on the bed). If you did need a TV what about having one installed on the wall to the right of the chair,(looking at the photo) and make sure it can swivel out, so when you aren't watching TV in bed it can be against the wall, out of the way. Then you can have a lovely (glass) ornament or two, or a bunch of flowers sitting on it along with your photos. I love how you have your bed dressed, spot on! (without the dark cushion) I absolutely adore the blue shades in the duvet cover and I would draw those out into the room. Love that you have opened up your windows in the lounge. Maybe a throw rug and some colourful (same colours as in the duvet cover on your bed) cushions on the lounge suite as nothing is really popping! There doesn't seem to be any colour except for the flowers and the photos. Colourful paintings on the wall would be lovely too. Maybe the potted plants could be in coloured (as in your duvet cover) pots instead of white. I know you weren't asking about the lounge and if you are happy with it, then that is all that matters. Well done.

There was a thread last year on Houzz international discussing how the quality of foam has gone down, doesn't keep it's shape as well on new furniture. Better sofas can come with a warranty, have you checked yours and what it covers; eg frame only ?

Also love the buffet....it could be the "hero" of the room. It is beautiful and they are so hard to come by at a reasonable price. I have a much cheaper style mid century buffet and initially had the TV on top of it, but now the TV is wall mounted above it. The distance between the wall and the couch wall is about 4m and we have no issues with the TV being too high...you definitely need to factor that in if you wall mount it though...luckily I had a handyman friend helping me, otherwise I would have put the TV too high. With the TV being mounted, it actually makes the buffet more of a feature and anything that is put on the buffet is now "displayed" instead of being part of clutter with the TV. It looks great and I know yours will too if you wall mount the TV. That is the great thing about the mid century buffets...they seem to fit in just as well as modern furniture as they do with the classic furniture....and because your is "classic", it will never date...a great investment.