Heya so im in Tokyo for 4 nights and looking for cheap places to stay . i looked online , but wanted to see if anyone have any ideas .. 
Tokyo free stay or low cost
Why did you just post on another thread that you were in Tokyo for 3 weeks and spent no money? A cynic would say you're simply fishing for a way to post your website...
Cheers,
Terry
Try:
couch surfing tokyo.
.
Im going to Tokyo 2nd time and i will try couch surfing , sound like an idea !