The pencil house was a great stay for my wife and young son. Its rare to find a detached house in the middle of tokyo, and we throughly enjoyed the little oasis. The brightly lit space was compact to western standards, but as expected for tokyo, the 3 of us fit more than comfortably. The location is central, being a 15 minute walk from shinjuku station, however in the rain, it becomes a little more challenging, so we opted to use the station closer by for a transfer.
Overall we had a great experience and would definitely consider staying here again.