Luis and Toshi were perfect host for me!
They were so friendly, kind and communicative, and I felt like staying at my uncle's house^^, really relaxed.
Everywhere in their house was quite clean and fashion, and I really felt comfortable.
They had two pretty dogs, Caramero and Tony, which were wise, calm, and slowly moved. They didn't bark aloud.
There were six other guests when I stayed them, but I was never bothered about noise. Everyone in this house was so polite. I think their hospitality made the atmosphere.
Their house is located in about five minutes walk from the nearest station, ShinEgota. It is a kind of bed town, so very calm and easy access to city side, Shinjuku.
After I booked the room, Luis send me some messages that told me the way to their house in detail with some pictures. The guide was helpful and I easily got to their house.
I stayed "Mori" room, and they seem to have three other rooms for rent; Fuji, Sakura, and loft. They show the rooms on airbnb as each individual room, so if you want to stay their house, you can check four times. All of their rooms are very popular, you have to plan in advance.
I really recommend you to choose this room, you must like it. You'll enjoy your trip with "your family in Nerima."