I came here for a weekend away from the kids, and it was magnificent! I chose Cedartree because of the deep soaking tubs in all of their rooms, and I took full advantage of that feature. I also checked out the Onsen bath, and it was so relaxing. The sake bar downstairs was great, and the staff was very friendly and helpful.
I stayed in a deluxe room because I wanted the couch, but I was curious to know what the other differences between the deluxe and standard rooms were, so I asked a staff member if he could let me see an unoccupied standard room. They're very similar, but I noticed that the soaking tub in the standard room is shorter, and it has only has a ledge on one side of the tub, so if you're like me and bring a special tray table for the bath, you'll want to get the deluxe room.
I read other reviews saying that the fridges in the rooms are super small, so I didn't bring much that needed to stay cold. I do wish the mini fridge was a little bit bigger, but it is tall enough to fit a bottle of wine, and that was my main concern.
Overall, it was a wonderful experience, and I plan to stay there again.