Derek’s flat is just as advertised and we thoroughly enjoyed our stay. The flat is located right in the prime location of all of the hustle and bustle of Grassmarket. If you want peace and quiet for your entire stay, probably not for you. But if you want to be in the center of everything, it would be perfect. The stairs leading up to the flat would would pose a problem for anyone with mobility issues. But honestly, everything was just about perfect for our family of three.