A good place to stay at, because of the location close to Sasazuka station with fast connections, though often you will need to transfer in Shinjuku. The location in the neighbourhood is also really nice, it is in a residential area which gives you a different experience from the big city just 2 stops away.
When we were there, the outside was being painted. This caused some paint-odor in the room the first days. A few days before our arrival we were informed about the renovations and about 20% of the original sum was refunded upfront because of this, a very nice gesture.
All in all it is a good place to stay if you are alone or as a couple. It is small, so don't expect a lot of space inside. The location is good, the quality of the facilities (shower, kitchen, amenities) is fine and the communication went well (with a little help of Google translate).