Jump into the room and onto the Grapple block. Requires a runway of only 2 tiles in the adjacent room.

Entrance condition:

{
  "comeInJumping": {
    "speedBooster": true,
    "minTiles": 1.4375
  }
}

Requires:

"canPrepareForNextRoom"
"HiJump"
"canTrickyDashJump"
"canDisableEquipment"

Dev note: It can be done with no open ends, but it's a fair bit tighter.