text: I went there for my lunch today. Here's how the steps look in this corner: https://www.instagram.com/p/DSFfj84jbe1/  This photo is viewing roughly northwards, so the steps lead down if you're walking westward down onto the lower footpath by Harcourt Buildings.
  I've added them to the map: https://www.openstreetmap.org/changeset/175767151
  
  The steps in the middle of the garden are correctly mapped already.