Rachel's place was fantastic. It's right in the heart of the action of Edinburgh - a 3 minute walk to Edinburgh Castle, 5 minute walk to Waverley station and the Royal Mile is right out the back door. A great view of the New Town area.
Communication was easy, and arrival time was a fairly flexible. We had given a bit of a window for arrival due to coming in from out of town and were accommodated without issue. The room itself is on the 3rd floor, and have to go up a flight of stairs before getting to elevator, but not a major problem. The room itself is a studio, with large bed and nice kitchen area. Large bathroom with good sized shower. Only minor concern was noise, as it's right on a busy street so if you're an extremely light sleeper might cause some issues. My girlfriend is a fairly light sleeper and didn't have any issues. Also, laundry is available in the building at no cost.
There is a back door, which exits out right next to the Jolly Judge pub, with alley access to the Royal Mile. If you turn right, you're literally steps away from Edinburgh Castle. It's in a great area, and I'd recommend this to anyone - really the location can't be beat!