Ko's apartment is very close to Nishi-Ogikubo station exit. It's a small, modern industrial space suitable for 3 people. He greeted us at check-in and helped carry our heavy luggage up the apartment stairs. Also helped carry them down at check-out and kept out luggage for us until the evening for our night flight home. He was always responsive with messages and any information we requested. The train noise did not effect us at all. The only issue is the vibrating noise coming from the air conditioning unit from the business next door which starts around 4-5pm until 3-4am. That is not Ko's fault, but just a warning for light sleepers who can't handle noise. Thank you Ko for letting us stay at your apartment.