I Hi highly recommend Seika & Yukia.
This is a newly built single house locates in a quiet and safe residential area about a ten minute walk from the subway station. There are many stores on the way such as restaurants and convenience stores.
There’s only one guest room that means you would be the only guest in the house. We didn’t have to worry about any security issues throughout our stay at all.
Their kitchen and living room are on the second floor and Yukia always welcomes us to use as her family member. I enjoyed conversations with her and I’ll definitely stay this place next visit to Tokyo!