Then, the visitors should frankly answer it without hesitating saying no thanks when they don't want what is being offered.

Actually, people still tend to view declining the offer as a bad manners and feel like it can offend people's feelings.

As far as I know, some conservative people in Kyoto still consider that when you are offered something, you should decline it out of politeness even if you really want it.

The Japanese company usually educates their employees on in Japanese hospitality, and always puts much value on an idea that you should think about what your customers want, putting yourself in their positions.

I think that it is important for you to try to do that even though you can hardly do that. ("even though you hardly can." is less awkward)

Then, the visitors should frankly answer it without hesitating saying to say no thanks when they don't want anything/ something.

It's good that as long as you first ask, you offer a cup of Japanese tea and some snacks to not only your guests but also your visitors like your tutors.

The idea that you should think about what your others want, putting yourself in their positions, then you think about what to do is a fundamental concept of human relationship.

The Japanese companies usually educates their employees on Japanese hospitality, andmuchvalue is put on the idea that you should think about what your customers want, putting yourself in their positions.

If you wait on customers or offer hospitality at work, you will be required to offer a level of service above and beyond what is stipulated by the employee manual.

In other words, responding to various situations, you need to think about what to do and try to offer the best service and hospitality to your customers in a variety of situations.

I think that it is important for you to try to decline unreasonable requests, no matter how hard it may be. (Is that what you meant?)

Given the aforementioned idea of Japanese hospitality, people should ask their visitors before they serve drinks and snacks, although I've realized that more people do that than before. (I would say: "Although asking guests if they would like anything before serving them is becoming more common, there are still people who stick to the old notions of Japanese hospitality. I think everyone should ask their guests what they'd like before serving them anything.")

If the visitor doesn't want anything, they should politely decline.

Actually, people still tend toconsider it badmanners to decline an offer, as a bad manner andworry that it might offend people's feelings. (You could say "offend people" or "hurt people's feelings", but I don't think I've ever heard "offend people's feelings")

To make matters worse, there is an awkward tradition in some areas, such as Kyoto.

As far as I know, some conservative people in Kyoto still consider that when you are offered something, you should decline it out of politeness even if you really want it.

Because of this, hosts in Kyoto strongly urge their visitors to accept their offers even when their visitors decline them.

It's fine as long as you first ask that you Offering a cup of Japanese tea and some snacks to not only your guests, and other visitors such as tutors, is fine as long as you ask first.

Because of this circumstance, visitors were most likely to be thirsty and hungry when arriving at your house, so even if you didn't ask in advance, the hospitality was always welcomed.

Now that the times have changed, if you always offer the typical hospitality just out of custom, not thinking about what your visitors want, it won't be hospitality.

The fundamental basis of human relationships lies in the idea that you should think about what your others want and try putting yourself in their position before you act.

I think that it is important for you to try to do that even it is difficult.

Then, the visitors should frankly reply, without hesitating, saying "no thanks" when they don't want what is being offered.

Although I don't know when the custom started, I'm sure that at the time, water and Japanese tea were the only common drinks and you weren't able to buy drinks on the way to somewhere. "somewhere" sounds odd here - maybe "to your destination".