A single room with private bath
here at Toukaisou cost 4300yen or 4500 each night.
But if you don't mind sharing there are hostels with dorm type rooms that cost 2000+ per night.
The hostel toukaisou is located in Asakusa with lotsa good food. And there is this shop called Derika Paku Paku near Toukaisou which sells bento at 250yen each! XD
Plus Asakusa is nearer to Akibahara which anime lovers should visit I think.
Oh my I sound like I'm trying to sell Asakusa. XD
Ah and a restaurant called
Saizeria with lotsa chains around Japan is a famous eating place among teenagers due to it's low cost.
Just a few things I found while researching for my upcoming trip. =)