Very pleasant apartment about a 25 minute walk from the city centre, right on the bus route so easy enough to pop back and forth too and close enough so an Uber is cheap. The entryway to the apartment isn't the nicest but don't let that put you off the apartment is clean, spacious, has a good kitchen and a comfy bed. Whilst it was a little cold when we got there (single pane, large windows that could be sealed better), the heating soon sorted that out.
On the downside, the shower was cold, no amount of fiddling around with switches/dials seemed to make a difference. With the weather being so cold outside this was awfully unpleasant. But, if the hosts get this fixed I would happily stay there on my next trip to Edinburgh.