Kentaro-san is extremely easy to communicate with as he speaks and writes in excellent English. He is also responsive to your needs and replied quickly to emails and texts.
The apartment was very clean and provides the amenities you need to cook, as well as wash laundry, which was a huge plus for our family. The space itself is larger than many apartments we have stayed in Japan. A plus for us was that there was an elevator, especially if you have large, heavy luggage filled with all the omiyage you're bringing home!