We stayed here for six nights during a conference in June 2012. The size of our double room was good, however the single rooms in which some colleagues stayed vary in size and some are tiny! Make sure you ask if you can have a bigger single room if you feel claustrophobic! We were also lucky to stay on a non-smoking floor (living in Australia I hadn't even considered the possibility of ending up on a smoking floor!). If you want to have a non-smoking room make sure you specify this as the smoking floors and rooms do not smell very pleasant! The views from the rooms are spectacular, no matter on which side you stay - you either have a view of the bay or the city.
The breakfast buffet was nice (not the hotel's fault that we were a bit over it after six days). The bar in the hotel also features spectacular views over the city, especially at night. Unfortunately it is quite pricey (even for Japan standards) and last call for drinks is at 9.30pm.

Stayed for 1 night in this musical hotel. The lift doors had musical notes, there was a grand piano in the lobby and names of composers for their restaurants. The rooms were huge and as we were on the 39th floor, the view was magnificent! Breakfast was Japanese & continental and was most delicious!

Nearby the hotel was the train station where we arrived by Shinkansen. In the train station, there was a nice supermarket with an English speaking pharmacy where I managed to get some medication. There was also a large shopping complex nearby selling electrical goods and designer goods. Street musicians played beautiful live Japanese music outside. It's truly amazing. In the shopping complex, we had most delicious Unagi bento in one of the restaurants upstairs. The unagi was fat and tasty. Only gripe was that the small restaurant was short staffed and no one refilled our green tea.