We had a great time in Kumiko's apartment, the room was clean and tidy. The apartment size was prefect for us, 4 ppl together with our 4 luggages, we still have plenty of room to move around. There were sufficient facilities inside the apartment, we can even clean our laundry or reheat food with the mini oven inside.
Kumiko was very kind and helpful. He gave us clear directions on how to arrive the apartment from subway stations. Also, as our flight was early in the morning, we arrived shinjuku much earlier than the check in time. Fortunately, Kumiko was enough kind to allow us to have a early check in!
We are looking forward to have another stay in Kumiko's apartment during next Tokyo trip.