The New Otani is special. The garden is really worth taking a contemplative stroll: if not that, at least have breakfast in the beautiful restaurant that overlooks the garden (it will reduce your blood pressure... Unless you're paying!)
My favorite aspect is the little wedding chapel: it draws guests in traditional kimonos, which makes people-watching much more fun.
The service is attentive and unerring. The rooms often have spectacular views. I've stayed in several hotels in Tokyo: this is my favorite.
- Free Wifi