Conrad Tokyo is located on Shiodome area ( Shinbashi ). It is nearby Shiodome station ( Tokyo metro Shiodome station and Yurikamome Shiodome stastion ) and Shinbashi station ( JR and Tokyo metro ). I guess that it takes 15 mins from JR Tokyo station by cab. I have not checked the hotel HP yet, but ikyu.com is selling the only suite rooms from 74,000JPY( city view ) for a single rate per a night.

There are two view rooms, one is the city view and the other is the garden view.
RTWSTARALLIANCE, I need no break!
http://www.ikyu.com/datas/00000943x.htm