I stayed for 2 weeks in this Tokyo apartment. It was very conveniently located to the nearby Tameike-Sanno station, as well very close to 3 Convenient stores. It's in walking distance to Roppongi.
The tatami Mat doubles as a great secondary bed (there is additional bedding) and a great place to have some food. The apartment comes with silverware and cooking ware so you can cook food if you choose. It also comes with a washing machine that I was able to figure out despite limited Japanese comprehension.
I'd stay here again.