I stayed for three nights on a business trip. This hotel is located in Bunkyo, close to Kanda River, Waseda University and Takushoku University. For most tourists and business travelers it may seem be a bit off the "city center" (e.g. Ginza), but6 is in fact not too far away. The main reason to chose this hotel anyway would be the park. The hotel has the luxury of being situated at a quite large park, that can be accessed only via the hotel. The park has beautiful walking trails, pagodas, small exquisite restaurants and huge old trees. Absolute bliss this peace and quiet in the buzzing and hectic city of Tokyo.
The hotel is the former Four Seasons. Interior design and furniture are of the more heavy, conservative style. As expected in Japan, the hotel is very clean and staff is extremely polite and helpful.
Only disappointment I had was with checkin: when I arrived after a long flight from Singapore, I realized in the room that this was a smoking room. So late in the evening and very tired I had to go down to checkin again, and ask for a non-smoking room, as my assistant had clearly requested when booking.
The rooms are quite large for Tokyo standards, clean, and -as mentioned- not of the modern but conservative design.
Breakfast was good, service a bit slow though. I had also a dinner in the teppanyaki restaurant in the park (forgot the name) which was really good, as well as in the restaurant "The Bistro" which served an excellent Wagyu steak. The hotel bar is OK, but not great: first of all, you need to be able to tolerate loud Australian tourists and really LOTS of cigar and cigarette smoke. I had a Manhatten which was unfortunately only very poorly made.
All-in-all a very good choice with some small but tolerable disappointments.