Very clean, sufficiently equipped, everything looked and felt new. Walking distance to Shimbashi station with a few convenient stores that are opened 24 hours around it and also there are many eating places. Good security with private access to the apartment, but do not expect luxury of space though.
If you are coming from Shimbashi station, finding Hibiya exit can be quite tricky. So please ensure you have your navigation within the station right, each time.