This place is a 5 star plus and truly exceptional. Charming, comfortable, well equipped with lots of extras (umbrella, plug adapters, sweets etc).
Lilian very courteous and helpful and gave us useful tips. She generously left us some (many!) breakfast items.
The flat is spacious, extremely clean and cozy. Good shower and relaxing mattress. Plenty of tourist information in the sitting room. I am an architect and I think this simple style/decor is good for everyone. It is not too personal and relaxing for a short stay.
I would recommend this place for any traveler, also solo/female. The location was closed to the Royal mile (very central) and we felt so safe the entire time. Stairs in the building are wide and not hard to walk up. There is a direct bus No.300 from the airport.