Yumiko's home is a perfect place if you're staying for a week or more in Tokyo! It is a comfortable place for 4 people and the place has a unique Japanese charm to it. Yumiko provides ton of amenities and small things one expects at a home :) It will in a moment start feeling like you belong here :D
Other pluses are easy accessibility from the Metro station, shopping marts and enough restaurants. You can cook and relax at her place too as it is almost a full kitchen and few things you can borrow from the refrigerator :D
All in all Yumiko's home is in all essence a home away from home!