Indian Hindus aspire to be viewed as no less than whites, so just do whatever you would for a high income white family. If they have elderly parents with them, then downstairs washing / bathing facilities are a good draw. Most important of all, fit a powerful extractor hood / fan in the kitchen area, which you need to INSIST they use whenever they cook their oily concoctions. Generally, it's very easy to flatter them, especially if the male is a nerdy beta personality. The Muslim / Pakistani variety are a little different for obvious reasons, but most of the above should apply, the only difference being the male might be a little less compliant and amenable compared to his Hindu counterpart.