We fell in love with the apartment the moment we step inside. It was clean, beautifully designed, and have the most intoxicating, pleasant bamboo and tatami smell. We found no difficulty of sleeping at all. The beds are clean and comfortable with the softest duvet. Basic necessities are provided and towels are changed everyday!!
The apartment is also very baby friendly, as I am traveling with a toddler - there is a steep stair to get into the apartment, as Koji mentioned before, but we can block the entry with some chairs and find no problem with that.
Both Koji & Nami are also very responsive and friendly. They help as much as they can, and even brought us bananas and apple juices (which are very tasty!).
The apartment is not near the bustling Shinjuku or Shibuya, it will take approx. 1 hour or more by train. So if you are into the city life, this apartment is not for you. But if you are looking for a quaint experience in authentic Japanese neighborhood with your family, this definitely it. Find bars, restaurants, supermarkets nearby and connect with the locals. Walk alongside the river in the morning. Ueno and Asakusa are only a few train stops away - again, perfect for family trip.
I would stay again in their apartment in an heartbeat. It is one of my treasured experience in Japan and I feel really lucky finding the Bamboo Lodge here in Airbnb.