Summary: very good value for money, close to the center, in a residential area, and, most of all, Aki takes good care of you, with precise information and everything you need.
Location: The place is located in a residential area of Tokyo, easy reachable with the Toyoko line -- which runs every max 5 minutes from Shibuya, and takes max 10 minutes. So, you are close to Tokyo center, but in a very quiet place (consider that the metro in Tokyo stops before 1 a.m. and starts again at 5 a.m.). The house is 15 minutes from the metro, 20 mins if you have luggages (there is a slight slope), and Aki will provide very clear information on how to reach the house.
House: the room is a quite large one, nice bed for two people, air conditioning. There are other two rooms, with which you share toilet and shower. You have towels, toothpaste, soap for shower, tea, coffee, everything you need. You only have to be quiet, and respectful and not to disturb other guests, like in all the other places in Japan.
Host: Aki is a very precise person, with a good English, and, most of all, she is really welcoming, and she takes care of you, providing all the information that you need for a nice stay.
Additional: you can also have a portable wifi, which is really useful.