We had a nice time staying at Satoru's place. His house was clean, nicely decorated and is well connected to the public transportation. There was enough space for our group of six, as there were several rooms spread over three floors. A bathroom and separate toilet are located on the second floor with an additional toilet on the first floor. One downside: Only five beds were prepared, but we managed to add another one with the extra (futon-)mattress stored in the wardrobe. We found the highlight of Satoru's house to be the rooftop area, where you can enjoy a nice view of the Skytree. Satoru was always helpful and communicative. The self check-in and check-out were smooth.