The lenient version requires a runway of at least 5 tiles (with no open end) in the adjacent room. This is easier without Speed Booster and requires disabling HiJump.

Entrance condition:

{
  "comeInJumping": {
    "speedBooster": false,
    "minTiles": 4.4375
  }
}

Requires:

"canCrossRoomJumpIntoWater"
{
  "disableEquipment": "HiJump"
}