I used to work around kinshicho so I'm very familiar with the area. Great local food, lots of train connections that goes to the city center under 20 minutes. No lift is a bummer but pretty much a lot of Japan apartments have no lifts. The apartment isn't old and it's got good heating/AC, washing machine and bath. Good for 2 to 3 pax. The WiFi is sad though, it's currently a tethered pocket WiFi (an issue because we remote work). Starbucks WiFi is faster.
Would stay again and get my own internet