At check in they did not have my booking, but they were very helpful at finding me a room and helped me contact hotels.com to get a refund on my booking. The staff member who checked me in spoke enough English to help me, which isn't required but was nice all the same.
Originally I was meant to switch rooms during my stay because of the above issues, but they managed to keep me in the same room which was awesome.
Bathroom had a musty smell to it and what looked like mold in the tile grout on the walls, potentially related. Had the fan going 24/7 but the smell didn't cease.
Breakfast was ¥1200 on advance or 1500 on the day, last entry at 9:00 so if you want a sleep in you're out of luck.
Hotel is close to various stations, including JR (Keiyo line) and the non-JR subways. One stop from Tokyo station.
There is some traffic noise that gets in, not horrific levels but noticeable if your room is otherwise quiet. Sirens go by pretty frequently (or at least they did for the duration of my stay) but they were muffled enough that they didn't wake me, were just noticeable when I was still awake.
All in all a nice hotel to stay at, there are some minor cosmetic issues like stained/peeling wallpaper in places but it seems clean (other than the potential mold in the bathroom), the location is convenient, and the staff are super friendly and helpful.