Keikyuu Kuukou line (京急空港線) From Haneda (羽田空港) to Shinbashi (新橋)
Note: There should be a direct train, but check inside. It should have a display above the door telling you which stations it stops at. If it doesn’t go to shinbashi get off at Shinagawa or Kamata and change trains.
Ginza Line (銀座線) to Tameike Sanno (溜池山王駅)
Chiyoda Line (千代田線) to Akasaka station (赤坂駅)
Note: There is another station with a similar name, Akasaka Mitsuke (赤坂見附), you need to be careful not to go here by accident.
Fig 1. Route from Akasaka station to hotel
Fig 2. Route from Tameike Sanno to hotel