The place is great and convenient. It not far from Ryōgoku station and Higashi-nihonbashi (about 5-10 mins walk). The place was great, it's spaceous enough for 4 adult to live. There is washing machine. The security was good. Every floor need a key to open the button of the elevator. So even the toilet is not in the room, it's still very private.
I recommend the place if you need to stay in Tokyo for few days.
It that me feel that I was in my house.