Complex sentence: Mar Vista is a middle-class neighborhood of apartment buildings and small post-World War II ranches and bungalows, although the hilly areas near its border with Santa Monica (whose spectacular ocean views give it its name) are somewhat more upscale.
Split into simpler sentences: Mar Vista is a middle-class neighborhood of apartment buildings and small post-World War II ranches and bungalows. The hilly areas near its border with Santa Monica, whose spectacular ocean views give it its name, are somewhat more upscale.