The address for Strictly Ballroom is 125 Olde Greenwich Dr, Fredericksburg, VA 22408. It is located in the Lafayette Square office park, off of Lafayette Blvd, which starts in downtown Fredericksburg and runs southwest to Rte 1. (Lafayette is also labeled "Bus 1" on maps.) Once you find the Lafayette Square office park, look for Strictly Ballroom in the corner of the "L" shape of the building.
If you are traveling from north of Fredericksburg, take exit 130A off of I-95. Drive on Rte 3 east for 2.2 miles. Turn right onto Lafayette Blvd. Drive 1.4 miles and turn left into Lafayette Square.
Traveling from south of Fredericksburg, take exit 126A off of I-95, onto Rte 1 north. Drive on Rte 1 for 1.2 miles. Turn left onto Lafayette Blvd (at the Pohanka dealership) for 1.4 miles. Turn right at the light, then left into Lafayette square. OR just past the light, turn right into Lafayette Square.
There is a 7-11 on Lafayette, across the street from Olde Greenwich Dr. If anyone needs to fuel up, there is a very new Sheetz just south of Olde Greenwich, on Lafayette (great gas prices, recently!) Oh, and there are plenty of parking spaces right in front of the studio.
This photo (from the south, on Lafayette) of the light at Olde Greenwich Dr may be helpful, too: