Also note that the article is about a guesthouse. It is a business and you pay for the service. It is not about getting inside random people homes because whoev

Also note that the article is about a guesthouse. It is a business and you pay for the service. It is not about getting inside random people homes because whoever is living there is too polite to kick you out. The old lady in the article is so kind and polite because she respects you as a customer, takes pride in her job, and wants you to feel at ease. Service tradition really is something there. But don't get things wrong, it is still a business relationship.