We only stayed 2 nights as this was the end of our stay in Japan but we enjoyed staying at Koji and Nami's place! We actually met Mr T first but were then welcomed by the whole family :)
The house is located approx. 40min from Shibuya or 50min from Shinjuku so it's a bit far from some main districts in Tokyo but it's a lovely neighborhood.
The room was big and very clean, we shared the bathroom with 2 other people but there weren't any issues at all! The portable wifi is so convenient we wish we could have one in our country but it doesn't exist here yet :(
If you are not on a tight schedule and can waste some time on public transportations then you won't find a better place for this price!