It may sound counter-intuitive, but formal settings can still be comfortable. The modern interior design shall not be too complicated or sophisticated, in fact.You will confirm that by mixing your modern furniture and mid-century lighting fixtures with bold fabrics and natural textures, as for instance glass tables with soft upholstery, or silk curtains with fluffy and colorful pillows. Sometimes, you only need the latest sofa designs for living room and the rest is just a matter of matching fabrics and the pillows patterns.
If your thing is a contemporary design, you should look for classic and modern pieces which never go out of style, as for instance Lucite tables and leather-made white Barcelona chairs. Learning how to decorate living room may require a bit of documentation, but room design ideas are always a useful experience.