We loved our stay here! Traveled over Christmas with our 16-month-old daughter and found the place to be a great space for all three of us. The beds were comfortable and the heating worked well despite the cold temps outside! The living space was comfortable and the kitchen was very useful. I wish we could have taken the trash out more often rather than leaving it in the kitchen, but I imagine this was only a problem because we were there for one week with a baby :)
Location was good -- about 10-15 mins walking depending on which of the MANY exits, lines, subway stops you're trying to get to. Plus it was only a 15 min walk to the heart of Shinjuku which was very nice.
Inori and Kenichi were very helpful and thorough in the pre-trip planning so we really knew what to expect. Thank you!