Yume's house in Hiro-o is, no question, the best Airbnb I have ever stayed in. If it is available, I suggest you look nowhere else.
In every way - from Yume's kindness and attentiveness to the amenities she provides and the impressive physical structure of the building itself - this apartment is special. While the pictures begin to show the unique modern architecture and size, much has been done since they were taken to make it a better experience for travelers. The place is spotless - much more so than in the photos. There is a fridge stocked with Perrier, ice tea, beer, and ice creams. The three stories are plenty large for a group of three (I was traveling with two other men for work), though the open layout does not yield much privacy for groups who don't know each other well.
The surrounding neighborhood of Hiro-o is also remarkably unique for Tokyo, offering a perfect combination of restaurants, bars, amenities (there's an impressive natural food store just two blocks away), and quiet. The train is a one or two-minute walk.
All I hope is that Yume's house is available on my next trip to Tokyo!