This apartment is exactly as advertised, and was very clean and stylish. We were three couples and a single, and the configuration of the apartment was perfect for that. It was spacious, and we never felt crowded.
We stayed at the apartment during the Edinburgh Festival Fringe, and found it to be a very convenient location. It was less than a 10 minute walk to the Grassmarket, about 15 minutes to the venues at the university, under 20 to the venues in New Town and maybe 10 - 15 minutes to the Castle (and the Tattoo) and High Street. Yet it was not in the thick of the festival, so it was possible to grab a coffee at a local coffee shop or a bite at a nearby restaurant without being totally overwhelmed by the crowds. There was no need for a rental car and we didn’t even Uber except to the airport; we walked everywhere. Some of our party took the tram back and forth to the airport (it isn’t that far), while those of us with more luggage took to an Uber.
We had a slight glitch on arrival (the previous occupants had left the keys in the apartment rather than in the lockbox), but we called BnBBuddy and worked something out that gained us access without an unreasonable wait. This is a great reason to book an apartment from a manager such as BnBBuddy that handles a number of apartments, rather than an individual — BnBBuddy has the infrastructure to respond to such glitches.
I highly recommend this apartment for a stay during the Fringe.