Wakana is a great host. Very positive, very helpful, has great English, and is not shy to show it, which is rare in Japan. She will answer all your questions (and I had a lot of them).
The location is amazing, it is like the Japan I imagined, quiet and quaint, and lovely. But also walking distance (10 min) to Shimokitazawa, which is lovely and lively neighbourhood full of excellent restaurants and cafes and bars.
The room is small, but perfect size for one person, the closet is actually big for Japanese standards.
Portable wi-fi is great, and very helpful if you don't have the local SIM card.
I am happy I chose this place for my 1st stay in Japan.