Join Date: Jul 2001
Location: Boston, Jo'burg, HK
Programs: AA EXP, Hyatt Lifetime Diamond, CX Gold, Mrs. Pickles travels for free
Posts: 13,857
Daigo is in Atago, so not near Shinjuku.
Kyubei is fine, but if you have one dinner, that may not be where you spend it, although it is quite fine.
I see you have listed Hotel De Mikuni. If you want truly top-class French, not too far from the PHT, head to the Cuisine[s] Troisgros at the Hyatt Regency a short walk from the PHT. Most excellent.