I have 2 adults and 2 kids with at least 3 luggage. So, will there be 3 adults including you? Then you may need two taxi cars.
How old will each of the two kids be during this journey?
A one-way taxi fare to get from Hilton Tokyo Bay to Hilton Tokyo in Shinjuku may surpass 8000 yen per car.
The route by limousine bus, which sounds easy, requires 2060 yen per adult.
What way is best depends on your priority, but there are lower-cost routes mainly by railroad.
With much luggage, it is better to avoid changing trains in Tokyo Station from JR Keiyo Line.
(The walking pathway from Keiyo Underground platforms is quite long.)
- Tokyo Subway Route Map
http://www.tokyometro.jp/lang_en/station/rosen_en_160530.pdfThe cost on the route of (A) + (B-1) is
estimated at around 1000 yen | 700 yen per adult (at 12 or more) | child (at 6 to 11).
A possible demerit of this route during a weekday morning rush is
that the trains from Shin-kiba via Osaki to Shinjuku may be crowded.
The cost on the route of (A) + (B-2) is
around 500 yen | 260 yen per adult (at 12 or more) | child (at 6 to 11).
A possible demerit of this route is
that cars for trains on Toei Subway Oedo Line are comparatively small.
Each of the two routes takes about 1 hour.
You can use a Suica prepaid card for these train rides.
(A) From Hilton Tokyo Bay to Shin-Kiba Station of JR
Hilton Tokyo Bay --[bus]--
Maihama Station bus terminal --[Walking]--
Maihama Station --[JR]--
Shin-Kiba Station.
Hilton Tokyo Bay
| [Shuttle bus: 10 min. or less]
|
http://www.hiltontokyobay.jp/pdf/common/Shuttle_Bus_Timetable.pdfMaihama Station bus terminal
| : You walk clockwise along the bus-and-taxi circle then find an elevator.
|
https://www.google.co.jp/maps/dir/35.6356891,139.8827174/35.6358595,13...| : You go up by elevator to the square in front of the station.
|
https://www.google.co.jp/maps/@35.6358921,139.8839118,3a,32.9y,231.15h...Maihama Station.
South Gate:
Maihama Station
https://www.jreast.co.jp/e/stations/e1414.html| Dep. at Track 2
| [JR Keiyo Line: Local or Rapid: 10 min. or less]
| Arr. at Track 2:
Shin-Kiba Station (of JR): Gate.
https://www.jreast.co.jp/e/stations/e859.html(B-1) From Shin-kiba Station of TWR to Hilton Tokyo
Shin-kiba Station --[(TWR) Rinkai Line (#) + JR Saikyo Line]--
Shinjuku Station --[Taxi]-- Hilton Tokyo.
Gate:
Shin-kiba Station
| [(TWR) Rinkai Line (#)
| : Through train bound for Kawagoe or Omiya: Around 20 min.]
(Osaki Station: The train continues onto JR.)
| [JR Saikyo Line: the same train: around 15 min.]
Shinjuku Station: New South Gate
http://www.jreast.co.jp/e/stations/e866.html| [Walking]
Busta Shinjuku (bus and taxi terminal): the 3rd floor
| [Taxi: around 10 min.: about 1000 yen per car]
Hilton Tokyo.
# : This line is usually called simply as Rinkai Line, without the name of its operator.
(B-2) From Shin-kiba Station of Tokyo Metro to Hilton Tokyo
Shin-kiba Station (Y-24) --[Tokyo Metro]--
(Y-27) Tsukishima Station (E-16) --[Toei Subway]--
(E-28) Tochomae Station --[Walking]--
Hilton Tokyo.
Gate:
Shin-kiba Station (Y-24, of Tokyo Metro)
http://www.tokyometro.jp/station/assets_c/2016/02/figure_yardmap_shin-...| Dep. at Track 2
| [Tokyo Metro Yurakucho Line: any train: Around 7 min.]
| Arr. at Track 2:
(Y-27) Tukishima Station: Gate;
Gate:
Tukishima Station (E-16)
http://www.kotsu.metro.tokyo.jp/subway/stations/tsukishima/solid.html?...| Dep. at Track 2
| [Toei Subway Oedo Line: any train: Around 28 min.]
| Arr. at Track 4:
(E-28) Tochomae Station: Gate
http://www.kotsu.metro.tokyo.jp/subway/stations/tochomae/solid.html?wi...| : You follow signs for Exit A4 then go up by elevator to the ground.
| [Walking for about 350 meters]
|
https://www.google.co.jp/maps/dir/%E9%83%BD%E5%BA%81%E5%89%8D%E9%A7%85...Hilton Tokyo.
