Kaen’s place is sparkling clean and tidy. It is cozy and small (by Western standard), but typical functional Japanese room size. You have all amenities you need in the room (except microwave, it could be handy!).
The apartment itself is very close to Okubo Station (around 5mins walk and only one station away from Shinjuku!) However it is located in residential area, so it is quiet at night.
Karen is responsive and patiently answers all my enquiry. She also advised of the forecast and reminded me to take umbrella before I left in the morning!
It was a pleasant stay! I will definitely stay at Kaen’s place again next time I am in Tokyo!