Koichi's place was amazing. It was spacious and very close to Shinjuku-sanchome. The area is very lively with plenty of places to eat at. What stood-out the most was Koichi's hospitality. He picked us up from the subway station as well as dropped us off at checkout. When I needed some documents printed, he was there to offer his assistance. Best host I have ever stayed with. I highly recommend this place. You will not be disappointed.