I stayed 4 days.
The room and other facilities(except gym) was literally perfect. The pool was fantastic.
Especially the room! I really enjoyed the walk-in closet for two, comfortable beddings, and being queit at nights.
But, when I ordered breakfast as a room service, they brought me just hot water in tea pot, instead of ordered hot coffee.
And very small apology, I thought, followed.
The food(including the lunch at Peter) was not bad.
In summary, exellent hardware(the perfect location near the Palace, the numerous hot spots in Ginza, and newly built Midtown Hibiya) but lacking software.