Yuki's house is a very good place to be in Tokyo. Her house is very big for Tokyo standards.
It's located on a very residential area, so it's very silent. The downside is that there's not great stores or restaurants very close, but a train station (from JR Yamanote Line) is 5 minutes walking.
There's a huge stairway to reach the house and it may be a problem if you have big luggage or mobility restrictions.
Yuki was awesome as a host. Very good communication before and during the stay. I felt very comfortable when planing the trip. I had a problem with the wifi on the first day, but she rapidly solved it.