As everybody else has already said, fantastic experience. Kumi is incredibly kind and generous, will pick you up from the station, cook delicious breakfast for you, take you on a tour of the neighborhood, etc. Absolutely lovely. She's the best.
Cool location in a quiet neighborhood that is nonetheless close to major hubs like Shibuya and Shinjuku. Two cats, but they are quite shy and will not bother you. Narrow staircase which can be difficult to navigate with large luggage, but totally worth it.
Just keep in mind that the address listed here is not completely accurate. You will receive the exact address once you have booked. Just keep in mind that using the get directions feature on airbnb will not lead you to the right place.