The apartment was perfect for us as we were 5 adult family members traveling. It is located in a quiet neighborhood which was very nice to come back to after a busy day in the hustle/bustle of Tokyo. Our stay was in June 2019, so it was hot and humid outside. This apartment gets high ratings for having great air conditioning available in the living and both bedrooms. Another convenience was having a washer/dryer available to us, which allowed us to pack less than usual. I also have to say we all thought the shower/bathroom was fantastic! Access to train lines was very doable, 10 minutes or so for us.
The owner was very helpful with emails, directions (with screenshots), and making sure everything we needed was in the apartment. He even gave us local tourist tips and information via email.
I would definitely recommend this place and this owner.