The Sapporo Airport hotel does not take reservations any earlier than 6 months out. So you need to wait to try booking a room. This a good option for those not wanting to spend extra time in Sapporo or Otaru and just coming in late on the day before embarkation.
You can still contact this company for transfers from Sapporo to Otaru when you are planning on heading in that direction. The service hotels as well not just leaving from the airport.
