Our five-night stay was just what we'd been hoping for. The apartment is just as described, and had everything we needed. It was easily walkable to the Grassmarket and the castle, as expected, but it was also surprisingly just a short walk west around the castle to the Prince Street garden. The saturday farmer's market was also a nice, walkable treat. The bus to Arthur's Seat is right outside, and other buses (e.g., to Holyrood) are a few minutes away. Lynne was very responsive, and graciously met us in person to show us into the apartment and to answer any questions. She's also compiled a very helpful notebook full of information about the apartment and the neighborhood. Be advised that, as some other reviews have mentioned, the apartment is up two flights of stairs. The only slight wrinkle in our stay was the shower situation. It's functional, and plenty hot, but not exactly luxurious, and some bigger people might find it a tight squeeze.