Flooring
Flooring is like a blank piece of canvas you paint a picture on. Avoid using stark coloured flooring if you want a long term look for the furniture you wish to place. A beige coulored flooring, be it wood or stone is ideal because most colour schemes go well with it. Also, the option of changing the furniture and fabrics remains open without having to break and redo the flooring.
Furniture
Trick is to stick to neutrals for furniture and play with colours and textures in the form of cushions and accessories. You can also explore the possibility of using a limited edition furniture piece, or a radical-shaped one to add a little drama to your space.
Make it Personal
Always remember, your home has to be different than a hotel. Bear in mind your lifestyle. The space should be a reflection of who you are. Use your passion/ hobby to add a personality to your space. Layer your living room with books, a collection of your favourite things, curios from your travels, or just things, which make you happy.
Curtains
Fabrics help soften the rigidity of an otherwise concrete space. You can use full height, ceiling to floor curtains to make the room look taller.