The good: amazing neighborhood, timely and helpful communication with host, comfortable bed and shower.
Things to know: very basic (only 1 pot in kitchen, only coffee mugs but no drinking glasses, no laundry detergent provided, etc.) and pretty sure the unit hadn't been cleaned recently (floors/counters dusty and towels smelly upon check-in).
In all, I was very happy to experience Hiro-o and appreciated Ruka being available to provide immediate responses to whatever questions I had. This unit seems used only as a rental and therefore is pretty bare-bones. A good home base for exploring Tokyo but not really a space for spending a lot of time relaxing/cooking in/etc.