Use a platform below the door in the other room to jump through the door while aiming down, carrying upward momentum into this room. Hold down and back through the transition, to perform a momentum-conserving turnaround past the corner. Perform a mid-air Spring Ball jump, timing a pause to hit soon after the mid-air jump. Unequip Spring Ball, lay a Bomb about half a tile below the peak of the jump. Press pause at the peak of the jump, tp reequip Spring Ball immediately after Samus is boosted by the bomb. Buffer a jump out of the unpause, to get a second Spring Ball jump and make it up.

Entrance condition:

{
  "comeInWithSidePlatform": {
    "platforms": [
      {
        "minHeight": 1,
        "maxHeight": 1,
        "minTiles": 7.4375,
        "speedBooster": true,
        "obstructions": [
          [
            1,
            0
          ]
        ],
        "requires": [],
        "note": [
          "This applies to Warehouse Entrance."
        ]
      }
    ]
  }
}

Requires:

"canCrossRoomJumpIntoWater"
"canTrickyDashJump"
"canMomentumConservingTurnaround"
"canUnderwaterBombIntoSpringBallJump"