The place is quite large for Tokyo standards and has a lot of amenities - even some not listed.
For example: Mitsuko-san provided the three prong - to two-prong converter which was really helpful. This can be found in the closet.
The location is very convenient to the subway and is in a very safe, quiet area. I was in Tokyo for business and would sometimes arrive back late. Even so, I always felt safe. The place is also located near convenient stores and places to eat.
Mitsuko provided an eating guide with reviews, which again was super helpful. She was very communicative and would make sure I had a positive stay.
I hope to visit Tokyo again soon and will definitely want to stay at her place again.