The room is really nice, perfect for one person. The large bed is comfortable. The private bathroom is a real bonus (compared to what can be found elsewhere in Edinburgh). There is also a small fridge, and a welcome basket with tea and coffee, and bowl/cup.
The house is 25-30min walk from Calton Hill / Waverley station (I didn't try the buses). Very easy to reach the city center / Royal Mile / Princes street.
I really had a lovely stay here, thanks a lot !