As others have mentioned, the location of this hotel couldn't be any more convenient. We also recommend the breakfast buffet, which was outstanding, with an amazing selection of choices for all sorts of picky eaters.
We got off the train and literally walked up to the lobby to check in. But we were early. With extensive apologies, the front desk staff asked if we would like to wait or come back a bit later. No problem! The subway station is right below. There is also an 11-story department store next door, with two floors of restaurants on the top and two floors of supermarkets, delis, and the most beautiful Japanese pastry shops and everything else we could've imagined on the two basement floors. And between these gastronomic floors were several floors of fine clothing stores. Just outside, the central post office and several major attractions are only steps away.
Before exploring all that, we decided to go to the helpful concierge service to get some information about certain sites we would need to make prior reservations to see. They provided loads of helpful information, got on the phone and got even more information for us, and handed us helpful literature, maps, directions, notes, suggestions... We hopped on the subway and got to one of the sites and made reservations for the next day. Then we returned and easily found ways to kill a bit more time and come back when our room was ready - all in just over an hour. By checkin time, we had managed to set up parts of our itinerary with the help of the concierge AND we had already learned how to use their subway system. Not bad at all.
While checking in, we mentioned that we had brought my niece to Japan to celebrate her 16th birthday and we would appreciate one of their choice rooms. "It's her birthday?," the front desk clerk asked with a bright smile. She then proceeded to upgrade our suite to an executive suite at the penthouse level with complimentary access to the executive lounge and the fitness room/swimming pool/spa. She also gave a significant discount on the breakfast coupons for all our four nights staying at the Granvia. What a great start!
The stream of extraordinarily high quality service continued until the very last moment we left the hotel. Every request was responded to without hesitation and with extreme attention to detail. The staff had the most genuinely courteous style I have ever witnessed in a hotel. I have stayed in a couple of seven-star hotels (higher than this hotel) in other countries, where the staff have treated us almost as well, but perhaps never with the same believable delivery of genuine hospitality. The Granvia's service at every level and for anything we asked for was simply flawless.
As for the interior decor of the hotel, the lobby could use some updating, but the rooms seem to have been updated already. Interior decoration in this building could be tricky. The hotel is an integral part of a behemoth and amazingly complete public and private, multi-service, multi-story center for an entirely historic, cosmopolitan world-class city. The post-modern brutal architecture of this huge compound structure is overwhelming at first. I have never been a fan of 1980s post-modern, corporate, stone, metal, and glass architecture. But, I must admit, I consider this center a huge architectural and engineering achievement. It manages to effortlessly connect a variety of everyday functions of a highly complex and sophisticated population together in one single location. And as far as post-modern architecture goes, for the first time, I actually felt I was witnessing an amazing accomplished that will likely be studies in future decades as a best example of what this era in urbanism and place making was about. It is certianly much more effective than its American counterparts.
The hotel could use a fresh update to its lobby, the reception area and the elevators. Our suite at the executive level was clearly updated and the decor was both calming and fresh. Maybe they have not completed their updating in all the rooms, as we did not witness anything resembling some of the items people had described in their reviews.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.