The Cerulean Tower Hotel is in probably the best location in Tokyo for tourists. Very close to Shibuya station.
The hotel itself is very nice but maybe a bit bland. The staff of course are very polite and attentive but we usually stay at the Hyatt Regency and I prefer this hotel but of course the location is not quite as good.
The rooms are comfortable and relatively large with beautiful bathroom. The beds are on the hard side, the view is magnificent. Immaculately clean.
I will say that it is a little noisy at night with thumping and bumping from above a little annoying.
Overall though you would have to be picky to not enjoy your stay at this hotel.