The instructions to find the apartment were extremely clear and easy to follow! The apartment was clean and tidy, with labels in English for almost everything. We really enjoyed our stay at Yumi's apartment even though we were not able to meet and thank her in person for the wonderful experience!
It's a great place for a group of 4, but a group of 5 can also fit in snuggly. The nearby station will be able to get you to most places in Tokyo easily and quickly.
The apartment also provide maps for traveling and suggestions for places to eat and shop, along with the pocket WiFi which would allow you to find places on Google maps on the go.
If you're worried about towels and other amenities such as toilet paper, it is already kindly provided.
Overall, this is a great apartment to stay in, if you're in Tokyo with a group of about 4 people. I would gladly come back to stay in the future :)