The hotel itself is a little hard to find only due to the train station (like many in Tokyo) being so large and having so many entrances. The exit near the metro Hibiya is 2 mins from the hotel and super convenient once you get your bearings.
For the most part, our stay was quiet however on the last night and morning of checkout, our neighbours let their child scream and throw a 10 minute tantrum in the hallway (after 10pm and before 7am). Of course this isn't the hotel's fault but you might request a floor with no children if you're not a fan of being woken up.
The room and bed (again, like most in Tokyo) were small, but I understand this is just the way things are. The bed was a little uncomfortable (cheap, semi-firm, bouncy), especially considering my partner is 6'3" and 110kg (he had to duck to get through the doorway).
Overall, I would stay here again.
The staff here are polite and speak English quite well. There are laundry and vending machine facilities, and you can leave your bag while you waiting to check in. The location is convenient and the price is fair for what it is. Essentially, if you're a tourist, it shouldn't matter too much. The biggest ticks for us were: quiet, clean, convenient and cheap.