It's very special. There are other smaller megaliths in the vicinity too. You won't regret going there!
A lovely place indeed. I found the main circle to be very attractive when the sun is quite low on the horizon, to ensure that the stones project long shades on the grass.
Speaking of midges, I found these to be quite civil creatures. They never seem to enter inside a house when a window is open. I wish mosquitoes would behave in a similar fashion.
Midges, though, seem to become very irritable when I extend the legs of my tripod in the field. The key thing is to prepare one's gear away from the shooting spot to minimise the exposure time (pun intended). Also, if one is waiting for clouds to move a bit before taking the shot, it can be wise to get away from the tripod until the proper time comes to be. Keep moving and do so in an unpredictable pattern, they will have a harder time following you.