The location is perfect. The hotel is right outside of Shinagawa JR station, it was extremely convenient to go to anywhere in Tokyo from here.
The service was average, nothing more than what can be expected from an ordinary 4/5 star hotel, or even less.
The other night, we found the housekeeping didn't give us new toiletries, so we called front desk asking for one set of toiletries, but the representative could not get me, so I said "I need one set of shower stuff, like shampoo and shower gel." And then, I got exactly what I asked: one shampoo and one shower gel, no hair conditioner, no body lotion, no soap. This was really beyond my imagination, or maybe this hotel was just short of supplies?
(The only thing that impressed me was a little teddy bear as a complimentary from Intercontinental for my wife's upcoming birthday)
We stayed 6 nights with Intercontinental this time, and I started to suffer a serious pain on my shoulder and back from day one and it was just getting worse every single day. I found the bed and pillows were not comfy and somehow kept my body in a bad shape when I fell asleep. All these sufferings disappeared right after I moved out and stayed in another hotel in the rest of the days in Tokyo, so I think there must be something wrong with the setup in Intercontinental (especially the pillows I think).
So, frankly it was not a pleasant experience with Intercontinental this time, and I will probably not choose this hotel again in Tokyo in the future.