We stayed at Kento's place for 5 nights (June 2017), and were very comfortable. So many things made our stay pleasant: the quiet and clean environment, comfy beds, strong shower pressure, excellent wifi (pocket wifi too), a/c in each room, big closets with hangers, a toaster, the clothes washer (with detergent) and most of all, Bryan's excellent communication and hospitality. He provided some excellent suggestions for us regarding restaurants, airport transportation, etc. And we enjoyed getting to meet him! He is a gem of a host, and I wouldn't hesitate to return to any of his properties.
About the location, we thought it was perfect. Though just a few minutes walk from both the convenient JR Yamonote Line and the Asukasa subway line, the neighborhood is peaceful and relaxed. There's a large grocery store outside the east exit of the JR station. I got fresh coffee every morning at the Lawson store, less than a block away from the apartment. The station has a great bakery, too. Lots of good restaurants are nearby. The location made a great base for us for exploring all of Tokyo.