Each planet stands for an element (Sun and Mars fire, Venus earth), and the chart also shows where a vastu dosh is likely. Two, three or even all four directions can turn out favourable for one person.
Class example: a chart with Saturn exalted in the 7th house and most planets in the western half pointed to a west-facing house with the bedroom and work chamber in the West. A strong Venus in the same chart called for rich curtains, a slight shine everywhere, cleanliness, greenery, bells, decorative items, toys and modern gadgets, with light blue (Saturn) or pink (Venus) as colours.