Our family of 5 had a nice stay at Yuko's house. It was easy to communicate with Yuko and she was friendly and helpful. The toaster in the house wasn't working and when I let her know about it, she immediately brought over a new replacement toaster.
You could hear the trains from the house, but we were ok with this. The futons are thinner than the ones we had at other accommodations, but there are extra futons in the closets so we doubled them up to make it a little softer for those of us less used to sleeping on firmer surfaces. The toilet areas could have been cleaned better - hopefully Yuko will be able to address this with her cleaner.
The house is about a 5 min walk to Mejiro station, on the JR Yamamote line, which is convenient to get to the various tourist sites. We also enjoyed the Mejiro garden and Jiyu Gakuen Myonichikan nearby, a short walk on the way from the house to Ikebukuro station.