I recently made the move to Saudi Arabia, and am currently living in temporary housing on a residential compound. One of the best features of this house is the floor- the large marble tiles are both attractive and incredibly cool underfoot, an important consideration in this desert heat. The floor also makes interesting use of contrasting tiles to break up the space.
I love the mosaic that separates the living room from the dining room, and the inlaid border that defines the area around the dining table. The marble mosaic by the front door is a great welcome into the house, and much easier to clean than a carpet would be. The entire floor is bordered by a band of dark green marble with a corresponding green marble skirting board extending the color onto the wall.
Given that these houses are designed for expats living here without a lot of their worldly possessions, the marble floors add subtle interest to the space and help keep the house from looking too impersonal.