This property is sensational!
I thoroughly agree with the comments by the previous guests. It is in a perfect position mid-way between the JR Shinjuku Station and Shinjuku Gyoen. Lots of restaurants, supermarkets and other shopping very close by.
The information provided by Ko was comprehensive and he responded almost immediately when we had a question about the air-conditioner. We tried a couple of his recommended eateries which were great.
We didn’t notice the traffic noise due to the double-glazed windows and actually enjoyed watching the intersection.
Would recommend without hesitation.