We stayed for a few days in August for the Fringe festival; it's a beautiful building and we all loved the bold, modern decor. It's kept beautifully clean and so well equipped. There are a lot of stairs, so it's probably not suitable for anyone with mobility issues.
The location is perfect for exploring the city on foot; we only needed one taxi to a restaurant we booked which was a little further out.
Stephen was easy to communicate with and we'd have no hesitation in recommending this rental to anyone in a small group visiting Edinburgh.