For a two week trip to Japan, the room had everything you needed and more. My time spent in this room felt more like "home" rather than a hotel room that I needed to crash in for the night.
If you need to host a larger party and want to stay close together, Masami conveniently owns the room next door as well (room 201). Therefore, the review from room 201 is applicable to this room as well (pasted below):
Short walk away from Hatagaya station and an even closer walk to an alley filled with restaurants and convenience stores (including Michelin rated Konjiki Hototogisu). The location was fairly central, as most major attractions in Tokyo we're more or less 20 minutes away by subway. Masami was always responsive to any questions I had and answered in a timely fashion. Highly recommended for anyone considering a visit to Tokyo.