The location is about a 10 minute walk to the downtown area of shinjuku, a few minutes walk to the JR shinjuku train station.
My fiancé and I loved that there was always something to do, but the apartment was tucked away enough just away from all the busyness.
The apartment itself is small compared to American standards, but it was a perfect fit for 2. The apartment was very clean and equipped with everything necessary for us, soap, detergent, shampoo, etc.
Overall, we had an amazing time and would definitely recommend staying here!