Amazing value! The apartment is fully-stocked with toiletries, kitchen stuff, and a hairdryer. Large sandwiches were dropped off each morning and Hisao also drove me to the train station.
About a 10 minute walk from the nearest stations, and only 15-20 minute walk from major stations. Might not be as convenient if you're planning to spend a lot of time in the main tourist areas (Shinjuku/Shibuya side of town), but great otherwise. Quieter area (great night's sleep!).
Kendo experience was fun and a workout! I highly recommend staying with Hisao.