I stayed at thao's place for 2 months while working in tokyo. it is great.
the house is 1 minute from the subway and a grocery store. it is next to arakawa, and if you are a runner, that is runners' paradise! it is a quite residential neighborhood. so location is great.
the room is comfortable and very clean, with all you may need.
there is a shared bathroom (shared with the guests of the other room, if any, and occasionally with the family members), which is also kept clean.
if there are other guests and they are loud snorers, you may hear them, as the two rooms for rent are next to each other. but you can hear loud snorers anywhere. so in that regard it is like any other places. and actually, if there are other guests, generally you do not feel they presence at all.
thao and her husband are extremely nice and attentive. they give you good tips and are always available for whatever you may need. they have a cute little boy. they live upstairs, in a separate place. so you and them have all the privacy needed.
if you are in tokyo for a day or for a few months, this is a wonderful and comfortable accommodation. you will be happy there.