This place is a modern and well furnished place walking distance from the Royal Mile, Mary Kings Close, the Castle, and many tourist things. It was warm and comfortable however, as it is on the bottom floor and between other appartments, there is some road noise, sounds from above and either side, and water tank noises due to the old building. If you are a light sleeper, bring ear buds and you will be fine!
Please note that there is no oven and that the water from the tap does not warm really at all but the shower water is great. I recommend the book store that you can get to five minutes up the road if you come out of the building and turn right!