We stayed three days at Ohkubo's place and loved it. We were welcomed with a personal welcome note, Japanese treats, and wonderful Japanese hand towels as gifts. The apartment itself was small but as described and perfect for two people. Shower is hot, heater worked great, and personal wifi was fast. The apartment is located in Korea Town thus lots of Korean eateries and the JR station is a short walk away. The apartment is a great base for your time in Tokyo and the price is unbeatable!