Wonderful location - two paths to the top of the hill (where most of the attractions are) are available: The stairs going directly to the castle gate, or the sloped road lined with nice shops which takes you to the royal mile, perfect if you have a stroller. Plus this is on the ground level, so you can roll right into the house, which makes things easy for moving in and out.
Security is very strong but easy to get through, as there is a key FOB for the gates.