We (group of 3) were happy to stay at Yoko's house, it was great choice. Apartment is really stylish, well-cared for and we were feeling like at home here.
It is little bit far from JR, that we prefered to use. But we got used to it pretty quickly :)
Yoko and her husband were very helpfull, communication was easy.
We are recommanding to stay here if you visit Tokyo.