We are fortunate to have two exterior outlets, one up high specifically for the awning lighting and the second in the exterior radio/CD player box.
If I were to add one, I'd put it just beside the front basement where I could easily run Romex wiring through the basement and have easy access to the interior wall for easy drilling and placement.
Bob and Better Half
2007 F-250 PSD, SW, CC, LB, 2WD
2006 TF32SS Cross Terrain Toy Hauler (sold)
Reese 16k slider