Our group had a great stay at Keiko's apartment. She was very accommodating when we arrived later than expected and gave us a warm welcome and tour of the apartment. It's very clean and has everything you need. There are lots of labels in English and other languages and other thoughtful touches to make your stay comfortable. The apartment is very spacious with 3 bedrooms. The kitchen was well equipped so we could prepare some meals. The location is great. The apartment is on a quiet street near Yotsuya san chome metro station and you can walk to Shinjuku in 25 minutes. The pocket WiFi worked really well for all of us and lasted all day. Keiko was always available to answer questions or give advice and even sent us on our way with some traditional Japanese sweets to enjoy on the shinkansen. I would recommend Keiko's apartment to anyone visiting Tokyo.