A 5-star experience all round. Koichi's apartment is fantastic and is exactly as described in the listing. We are a family of 4 and the unit had a good amount of space for us. Everything was very clean and the apartment smelled lovely when we arrived. The location is brilliant - in a quiet street but a very easy walk to both shinjuki sanchome station, shinjuku JR station, restaurants and all that shinjuku has to offer. A great supermarket (maruetsu) a few minutes walk and loads of convenience stores a minute away. What made our stay such an extraordinary experience was "super host of the century" Koichi. He is nothing short of brilliant and will really enrich your experience. He collected us from shinjuku station and after he settled us into the unit, he walked us to the supermarket so we could get some supplies (without getting lost on our first night!) My son requires a special diet and Koichi was super helpful in finding gluten free bread and even put a toaster in the unit especially to toast his bread. Koichi's airBnB is one of the great highlights of the holiday and we would stay there again in heartbeat. Thanks for everything Koichi :)