Here is one more example. Mike and Maddie's Upper West Side apartment. Coming in at under 500 square feet this is a prime example of making a small space so lovely.
I think the consistency of the color scheme is what makes this single floor apartment feel unified. It is obvious that the main color is that beautiful aqua but then it is punctuated by red and yellow in almost every room and kept fresh with lots of white. For an even closer look, head on over to Apartment Therapy and check it out for yourself.