My family loved the stay with Shintaro! Host is quiet and friendly, always asking us if we needed anything or any recommendations for the next day.
Bedrooms and bathrooms are very clean. Host provided towels for us, which he washes on a daily basis. Overall, the house is very spacious - compared to most houses/apartments you find on Airbnb. Very suitable for family of 4-5 as we get our own personal space in the living area/bedrooms. Very value for money and comfort!
The location at ikkebukuro is also very convenient - direct NEX train from airport, direct JR line for short day trips and near all lines connection to tourist attraction. Alot of food and shopping around too. Note that the walk from the NEX ariport line to the exit C6 (nearest to house) is a bit of a distance, so be prepared, especially those with heavy luggages.
Overall, we would highly recommend Shintaro and his place!