We traveled as a family of 2 adults & 4 kids.
What we loved about the place is its location and accessibility. Good restos are around the area and at least 3 convenience stores (Lawson and Family Mart). There's also a couple of drugstores for OTC meds. The Yotsuya station is 500m away and can be quite a walk for small kids. For adults, it should be fine. The Imperial Palace is less than 3kms away for those who wish to do training runs.
Our host was very helpful when we had some trouble accessing the key. He replied promptly to all of our queries.
With 4 kids and 6 luggages, it took some creativity to make space for all of us. The cleanliness is fair, but could be improved. My husband had some bed bug bites on his chest after the first night. Also, a heater for the living room would be nice as it gets very cold in the mornings.
Overall, I wouldn’t mind going back to this unit again. Thanks so much!