The flat can accommodate up to eight people, but we were only four which was great. The beds were very comfortable and the apartment very clean. The walls between each bedroom, corridor and the living area do not go all the way up to the ceiling, but this is to make temperature control from the two airconditioners even throughout the flat. The apartment building is just a few minutes' walk to Inaricho station which is two stations away from Asakusa and one away from Ueno, so it's very convenient. And though we never actually got to meet YK-san, communication was never a problem and he messaged every so often to check on how we were doing. When we return to Tokyo we will definitely want to stay here again!