Staying here now. Booked a standard queen, upgraded to a corner king on the 40th floor with windows on two sides. Dummy bookings were showing only twin rooms available so wasn't even expecting that. FDC asked if I'd like to check in at the club (didn't matter to me) and proactively asked when I'd like to check out (up to 4pm). I also only booked one person (used to booking Hiltons) which caused a slight hiccup (more to do with Osaka's new per person hotel tax) that was quickly rectified.
The height mentioned upthread-- if that bothers you (or your companion), do that into consideration! My wife described it as being perched up on a tree out on a branch. Floor to ceiling windows in the room but also the soaking tub is next to its own window!
The hotel elevators require a swipe below the floor buttons to access the guest floors. I didn't notice when the bellhop took our bags up and spent a little bit of time (and trying different cars) after the elevator announced it didn't go to my selected floor. I was thinking that I that only certain elevators went to certain floors (like the main building lobby banks). What a dummy!
Finally, separate key cards for the club and room/gym. Don't make my mistake and grab two club keys in the dark to use the gym before sunrise. The wife was not amused to hear a ringing door bell wake her up.