This is a small, lovely apartment in the heart of Grassmarket, right underneath the Castle/Royal Mile and within easy walking distance to pretty much everything -- the Royal Mile, Victoria Street, University of Edinburgh, Arthur's seat, and on and on. You also can easily walk down the hill to Prince's Street and New Town, the Waverly train station, Carlton Hill, etc. The apartment was very clean, well appointed, and quiet. There are stairs, but that's the case for pretty much every apartment in Edinburgh if you want to stay in the Old Town. The owner was there to meet us and orient us to the apartment, and the entire experience from booking to departure was smooth and seamless. We would absolutely return and recommend it for two people, or perhaps a couple with one small child.