A comfortable and clean place in a quiet part of Shinjuku. But you can get to the Metro by a short 3min walk. Or walk to other areas in Shinjuku. Fully equip kitchen and dinning area. Three separate rooms. Which is great for us with a family with two small kids. Cos we want to sleep separately away from them.
Most places in Japan have a huge rooms that can sleep many people. But there is no separation. We used the two rooms and used the other room with the sofa bed as a living/TV room.