Head to the intersection of Bearwallow Mountain Road and Grand Highland Drive. Stay on Grand Highland Drive past the gated entrance and stay to the right on Summerset Drive. Park at the intersection of Spring Rain Drive and Summerset Drive. The parcel is to your west and a blue sign indicates that it is lot #90.
This Google Maps link has the location of the things you'll want to see:
https://www.google.com/maps/d/u/3/edit?mid=1u4r94tx63Rwqln5qZO6QMIwTZxJRLW0&usp=sharing