Kei and Kotaro are great hosts! They go very out of their way to accomodate you. My boyfriend and I had an amazing time in Tokyo with them. They would show us around the city at night and were knowledgeable about all the tourist sites we wanted to see. The japanese cell phones and portable wi-fi they lent us were extremely useful and helped us feel much more comfortable in case we got lost. Kei made a delicious breakfast for us everyday and let us wake up whenever we wanted. We would definitely recommend all our friends to stay at the kero kero house and we hope to go back there someday soon!