"This is a well situated hotel in the Shinagawa area. I stayed in the newly renovated annex. The room was very nice.
The annex is inside a huge resort complex with access to so many restaurants, a theater, a bowling alley, shopping etc.
It is also walking distance to the Shinagawa station. At this station, you can access JR or the Kyukei line which can take you directly to Haneda airport.
At the moment, there is construction going on next to the Shinagawa Prince complex so it might be a little noisy at times."