Tipping is rarely seen in Japan; however, in Japanese-style inns(=ryokans) you can put a money bill(Y1000) in a small envelope and  hand it to the person who you think deserve it. Here the idea of taking out a money bill from your pocket and handing it directly is considered rude. But when you stay in a hotel, things are quite different. They are trained to politely reciprocate your offer with an outright "No thank you,." which will be accompanied with a slight bow.