It is a great place, I'm leaving one star because I believe people who consider to staying in properties managed by this owner (management company) have rights to know what could happen.
In a tenth out of my forty stay, gas and electricity suddenly stopped.
It required lots of communication with utility companies and took all fixed whole day.
The communication with the owner was challenging, no answer to the provided "emergency number" nor the office number in their website.
According to the utility company, the owner requested to stop the gas and electricity supply at that day. I believe that was a result of miscommunication or misunderstanding, but just wanted to let people know what happened to me.
*I think I managed to handle the situation only because I have knowledge of how Japanese utilities work. and yes. I am fluent in Japanese.
Again, the property is great. The location is decent, I'd definitely come back if the incident didn't happen.