During our stay at Kei's place, Kei was an excellent host. He emailed me details of his house and also kept in touch with us before and during our stay. His house is a nice and quaint typical japanese house which my friend and I really liked. The walking distance from the train station to his house isn't that far (probably about 5 - 7 mins?). The distance from Narita airport to his house can be anywhere from 1 hour to 1.5 hours depending on the train you ride on. Don't worry, Kei will make sure you get to your lodging. Overall I was very pleased with my stay in Kei's house because of the Kei's hospitality and distance from the airport.