Had a fantastic stay in the flat, it was an extremely spacious flat with great location, and was well kitted out so even longer stays would be comfortable. The shared entrance is a bit dingy,but inside the flat it's very luxurious, and there's a direct view of Edinburgh Castle! And even through it was cold outside, the flat stayed very warm (even though its huge with massive single glazed windows!)
Minor downside was there was definitely some general noise from the city which woke one of the lighter sleepers in my group, but i guess that's to be expected from such a central location.
Thanks Stuart, I'll definitely be looking out for this property again if I'm ever back in Edinburgh!