Amazing flat! Right next to Grassmarket and stairs to get uphill to the castle and Royal Mile. 10 minutes walk to the train and gardens. Area did not seem super touristy despite being very close to all the main spots. Super clean with big kitchen and comfortable beds. There is a bit of construction going on across the street behind a high stone wall (so you couldn’t see it), but the noise was very minimal and did not start until after 9AM.