I stayed at three different Airbnbs during my trip to Japan with my two brothers, and the K-Family's place was by far the best. The apartment is well-decorated, extremely spacious, and furnished with modern amenities. The shower in particular was amazing - the water pressure was perfect. The location of the apartment, while not at the center of Tokyo, was not an issue at all, as Tateishi station was a quick walk away. Also, the area around the apartment has its own quiet charm, and is definitely worth exploring!
As hosts, the K-Family went above and beyond in terms of hospitality, as other reviewers have noted. They checked on us every day, giving advice on the best train route to take to places. We even went out for dinner and drinks with one of the hosts, which was a blast (strongly recommend doing so if you end up staying here).
If you want a 5-star experience that's also extremely affordable, stay with the K-Family!