There's no better location. You're next to everything worth visiting in the center of edinburgh. The flat were big enough for the seven of us, with all the services you might need (even a washing machine at your disposal). Plus a small kind detail, like having breakfast already available for you.
Everything were clean and ready as we needed it at our entrance, and jordan solved all of our questions kindly.
All of it, plus the stunning view from the windows, makes it a save shot no one can regret taking.