Japan's standard of living is very high compared to its Asian countries, so when travelling to Japan on business, it is best to check the vacation rentals in Japan to find reasonable rates.
Japan is not your conventional holiday destination.  The country is steeped in tradition and local residents generally do not speak English fluently.  Although the Japanese are very helpful and very honourable, visitors should carry guidebooks.  There is a wide range of vacation rentals to choose from in Japan, catering to businessmen, tourists or students.
Visitors can choose Japanese style or Western style vacation rentals in Japan's major cities. In more remote areas, the hospitable Japanese will offer bed-and-breakfast for tourists, which are usually run by the family and are called Minshuku.  There are also unconventional forms of accommodations like temple lodgings and capsule hotels.  Ryokans are Japanese inns where the rooms are Japanese style. 
Vacation rentals in Japan for business trips can also be Japanese apartments and houses.  These dwelling units are mostly found in Tokyo and Kyoto. These are buildings or houses with dwelling units that are offered for short-term visitors that shows the visitor a true everyday Japanese lifestyle.
Businessmen in Japan are very cost-conscious and many Japanese commute long distances to get to work. Usually, businessmen leave their cars or bicycles at the train station where they live and take the train to Tokyo or the metropolitan city where they work to save on gasoline and because bullet trains are very fast.  When it becomes necessary, they use vacation rentals to stay in the city or stay at business hotels with very small rooms with food provided by vending machines. Employees and workers who just need a place to sleep stay at capsule hotels where the bed are inside small capsules with a television, a shared bathroom and coin lockers for their belongings.