To be honest, my time at Christiano's place was far from perfect. I felt the communication could have been a lot stronger both in preparation of our trip and during our stay. I was disappointed in the lack of clarity that we were to be sharing a bathroom and kitchen. I didn't see this listed when I made the booking. The room was relatively clean but a bit grubby and far from spotless. My girlfriend felt itchy during the night.
However, for the city centre location and the price, it's probably one of the better deals for an airbnb in Edinburgh but that being said, for my next stay I think I would choose a travelodge or similar if I'm staying just a night or two.