Ohkubo's place is very strategic location. It is approx. 0.5 min walk to the station entrance, however it does take a couple more minutes into the underpass platform, as you do with all train stations in Tokyo. There is a 7 11 just around the corner, and a handful of vending machines for early morning, midnight muchies. The apartment is near a hospital, which is a little less quiet with ambulance passing through 24/7. We didnt have any issues as most of our days were long and tiring from long walks. We would definitely recommend.