Selina's place is a good starting point to visit Tokyo. It's in a quiet neighbourhood and with the maps she provided it was easy to find, even at 9pm in the approaching dark.
The facilities (sink in the room and lavatory on the corridor) are clean and information on how to manage garbage, showering in a public bath and transportation as well as tea and cookies are provided (the latter was a really nice welcoming gift).
I made use of the one of the bikes provided quite often, but Myogadani subway station is also just around the corner. Enjoyed my stay there and would definitely recommend it as a cheap, clean & simple staying option.