Koichi's Airbnb is very comfortable and has an amazing location - it is walking distance to bars (including Shinjuku's famous Golden Gai region), restaurants, shopping, and public transportation (Shinjuku station). The apartment was large enough for three people to stay comfortably.
Koichi is a fantastic host. He offered to pick up and drop off my friends and I at Shinjuku station, sent me recommendations for restaurants nearby, and also helped my friends and I plan a trip to Mt. Fuji from Tokyo (unfortunately we didn't have the time to visit Mt. Fuji). He also made sure I was OK after Tokyo had a small earthquake during my stay.
I loved my stay at Koichi's Airbnb!