I know you have to be hard working to manage to come to Japan.
In Japan, everything is expensive, I know.
For international travelers there are many kinds of values to visit Japan such as studying our history, taking nice photos, talking with local people, enjoy local food, staying at rich hotels and so on...
However, again Japan is all expensive.
Staying at accommodations by users of Airbnb seems to be a good solutions to save your money and use your money for your own aims in Japan.
If you have a chance to come to Hokkaido I definitely recommend my friend's Airbnb rooms in Sapporo.
She has some rooms and all has good access to go to city center.
Her rooms are all clean, useful and beautiful.
Please refer to pictures as follows.
What do you think?
I am sure her rooms are really helpful for you.
If you'd like to stay clean, useful, comfortable and economic accommodation you should contact my friend.
If you'd like to find tours in Hokkaido please let me know.