Elevator in Shinagawa St - Haneda & Yamanote

I will depart and arrive in Haneda Airport and stay in the area between Gotanda and Shinagawa.
If the place is located closer to Gotanda than to Shinagawa, may I ask whether there are lifts/ elevators between the platform of train to/from Haneda and the platform for Yamanote line?
Reason is that I will bring heavy luggage, and if there is no lift/ elevator (just normal stairs) then it will be difficult to move between the platforms.
If yes then I will use the Yamanote line to go to Gotanda from Haneda, and vice versa.
If not then maybe I will just go out in Shinagawa and flag a taxi to go to the place.
Thanks.

All stations mentioned have elevators.

All stations mentioned have station maps on the JR East website.

Both have.

Shinagawa (Keikyu)
http://www.keikyu.co.jp/train-info/kakueki/KK01.html
高輪口:Takanawa guchi is "west exit".

Keikyu(pl-2) to Yamanote line outer loop(pl-2 of JR-EAST, via tansfer ticket gate) :
http://www.ecomo-rakuraku.jp/stationmap/22709.html
http://www.jreast.co.jp/e/stations/e788.html
The map east-west(top and bottom, JR's map top is west) is opposite.
And, no trains of JR-EAST fr HND, take a Keikyu train first.
http://www.haneda-airport.jp/inter/en/access/train.html

Gotanda (JR-EAST)
http://www.jreast.co.jp/e/stations/e695.html

Don't know the exact address,
but if there is a hard slope around, a taxi from Shinagawa may better.
https://goo.gl/maps/6mKje4qGfxD2
Check with Street-view of Google MAP.