Great place to stay for many reasons.
First of all, Julian is an amiable host. Having lived all his life in Edinburgh, he knows a lot about the dos and don'ts in the city. We had some excellent conversations about Scottish culture, economy, politics, and art. He's well-mannered and respectful.
The flat gives you this old Edinburgh-esque feeling as it is filled with art and beautiful furniture. It is located on the quiet backside of the building and overlooks a garden. You can use Julian's kitchen and living room. A simple help-yourself breakfast is included and consists of bread, some marmalades, other toppings, coffee, and tea. Sainsbury's on the other side of the street has a bakery and if you're favoring a Scottish breakfast there are many places nearby.
The location of the flat is very good. It's a 15-minute walk to the Royal Mile, 10 minutes to Holyrood Park (hike to Arthur's Seat), and about 20 minutes to St Andrew Square (which is where the bus to the airport, Airlink 100, stops). Lots of restaurants, supermarkets, and other convenient shops in close proximity (<5 min) to the flat. If you don't like walking, there are many buses that stop close to the flat.
Overall great value for money, would definitely recommend staying here.