Ken's room was the perfect home base for our stay in Tokyo.
In terms of location, I couldn't have asked for a better spot. A 2 minute walk to the trains connecting you to all of Tokyo. Plenty of delicious and cheap places to eat nearby, 7-Eleven, Family Mart, and other grocery stores nearby if you need a quick bite or beer.
The apartment itself was very clean and organized. Ken provided directions for the heater (which came in handy in early March), shower, TV, etc. The bed was comfy and plenty of blankets were provided.
We had trouble with the trains when we arrived in Tokyo (language barrier) and Ken was quick to respond with thorough directions to the apartment.
I would highly recommend renting Ken's room for your stay in Tokyo.