The apartment was lovely and a welcome respite as it was the last leg of a mother-daughter U.K. adventure (and mom's first AirBnb). Clean, well decorated, close to restaurants and shops right in Grassmarket - there's not much more you need! The complimentary coffee, tea and sweets are a nice touch.
If you're coming in from the train station and have heavy luggage (Ma is the classic American over-packer), then I'd suggest getting a taxi to Grassmarket. The walk isn't far but you just can't avoid the hills in Edinburgh!
Thanks Aileen and Simon!