The location of this apartment is absolutely ideal for Edinburgh, it is just under the castle which provides beautiful views when entering or leaving as well as an easy landmark to follow back. It is an easy walking distance from everything in the city, both in old town and new as well as close to multiple bus stops and Waverly Station. The apartment itself is clean and comfortable and fitted with everything you may need. The host is excellent and came to greet us when we first arrived, bringing with her fresh milk and extra towels. She made sure there was nothing else we needed and gave us some advice for places to go in the city, including one of our favorite places, Bow Bar, one street over with an incredible selection of whisky.
The only issue we had while staying here was having trouble with the washer-dryer, we could not get it to dry, but there is a drying horse in the closet so as long as you don't wash the clothes a few hours before you want to wear them (oops) it should not be a problem.
Overall, excellent apartment in an excellent city, you can't go wrong staying here.