Welcome to the Just Answer General category and thanks for your question. We don't have an interior decorator, but I would be happy to try to help.
Are there any bright colors that you love, and others that you hate? Turquoise, magenta, hot pink, yellow? Do you prefer more modern or traditional furniture and accessories? Does the carpeting extend throughout the apartment or is it just in one area? Any restrictions against painting the walls/woodwork/ceiling?
It's just a rented apartment so although a great idea, the light tube is not feasible. do you have other suggestions for lighting? I do have the taupe couch, so how would I incorporate white. Is there a particular brand or colour white as there are many different kinds of white. The carpet is throughout the apartment except for the kitchen.
The couch is contemporary, taupe with steel legs. Looking for ideas on lamps, kinds of end tables, pillows, how to make the small window in livingroom look larger, etc.