When turning into the car park, stay left and head down to the lower car park. There are no facilities there, although there may be a snack bar. However, there are public toilets in both Birnam and Dunkeld, where there are also cafes. Full details of the walk are on the Walk Highlands website, https://www.walkhighlands.co.uk/perthshire/hermitage.shtml, although the distance is closer to five miles. Please wear boots as the walk is muddy in places. The car park at the Hermitage is National Trust and £2:00 for non members, free for members.
Please reply to directly to Max if you are planning to come: firstname.lastname@example.org