Great location, 5 minutes walk from Akasaka-mitsuke underground station. Neighborhood has a plethora of restaurants, two convenience stores and a pharmacy all within a few blocks of the apartment.
We especially enjoyed the bathroom facilities, but found the kitchen amenities a bit lacking (glasses, plates etc.).
The biggest downside during our 2 week stay that only 1 key was provided, necessitating daily pre-planning of who was able to leave last and lock up and also come back first to let the others in via the intercom.