Park Inn 

If you are a poor prince or pincess and ask to be showered with facilities for a low price in Japan forget it.. don't bother reading the rest... You get the bare essentials for the lowest possible price... Here is my experience. As soon as you come to japan you realize that there are millions of people competing for a tiny island and that space comes as the cost of high real estate prices. A motel room in Tokyo is around 50-70$ a night while in Osaka it ranges from the 30-50$ usd per nght. You will mainly spend all your money on accomodation, transport and gift shopping...the rest is cheap and will never drain your savings. I exchanged 300USD to get about 40 000 yen after paying my accomodation for 9 days (15 000) and spending 15 000 on JR train tickets, i managed to do a full week visiting Osaka, Kyoto, Kobe, Nara, Kyosan and enjoying Restaurants and bars, on a 300 usd budget. How did i do that? Park Inn. You can get a room and thats it. No heating, no private bathroom, no closet space.... just the bare essentials...I took the cheapest room and they gave me a key, and left me alone. You want a shower? Public Bath.. You want a kitchen... microwave + Hot Kettle.. You want to go number 2 Public Bathroom.... Otherwise free internet and TV cable is included with everyroom. One night the temperature was cold, they told me that i didn't pay for the heated room so instead they gave me a blanket. Lets be realistic it wasnt -10.. it was around +5 Celcius.. nothing to freeze over. Otherwise the staff was very helpful and i had the chance to practice my japanese because english isn't their strong point. I got what i paid for....the lowest possible price for the bare minimum... with all the Shower Rest Shops/Laundry Shops/Short-Rest Salons/ Automated Locker Shops... that cost tons of money, even if you camp in the japanese jungle, you won't get cheaper than this...