This place is comfortable and clean in general. Only the electric kettle is a bit dirty so we did not use it. It is quite small but I think it is acceptable as places in Toyko are usually like this. Four people is maximum I think.
However, this house is a bit far away from the JR station when you are carrying your luggage. It is a bit difficult for us as girls. Also, the biggest problem is the heating system in the bathroom. It requires some techniques to handle it. We could not fix it even with instructions at the first night so we could not use it. This is a big problem to us but the host is very helpful that she came and checked with us on the next morning. The host is very helpful before and also during the trip. They have very prompt responses to your questions.
In general, I think this place is good for budget travellers and those who would like to get close with local Japanese lifestyle. You can experience local living area. There are a lot of shops,restaurants and convenience stores nearby! Thank you :)