Excellent walk and accessible to people who do not have a car. Climbing from behind the hollyrood palace is a bit steep but worth it! View is magnificent and makes you feel more like in the highlands rather than in edinburgh.
I have to say I was a bit embarrassed when I saw an 80 year old running up while I was out of breath just walking. An eye opener, I need more exercise and one day I'll manage to run up arthur's seat!