Easy to follow once you are on the path. Hiking with a photo camera takes longer time (consider the daylight limits in low season, it gets dark by 5 pm). I was hiking there late December and it was very comfortable (I assume it would be too hot to make this hike in summer). Suitable boots are neccessary (stone-paved track can be slippery in some places). The views are magnificent and there are occasional tables and benches on top of mountains (looks perfect for romantic dates:).
I walked from Positano to Nocelle (or you can take a local bus for this part if it is too much for you), joined the path there and made it up to Agerola, where took a bus to Amalfi, then changed back to Positano (if you start in the morning you can cover several towns on the coast). It feels very safe up there and you meet other hikers or locals on the road. It was definitely the highlight of my 2-day stay in Positano. Unforgettable beauty of Amalfi coast.