Assuming that you drive from Cape Town to the villa this is how to get there:
Take the N2 in direction east, towards Somerset West and Knysna. This highway will lead you over Sir Lowry's pass, until the exit to Hermanus via the R43. Follow the main road 80 km, through Hermanus in direction Gansbaai. Half the way is Stanford. After appr 40km you take the first exit to the right 'De Kelders'.
Drive 300 meters down to the coast and follow the coastal road in direction North as far as you can. The villa is the second to last house on the seaside. Total travel time from Cape Town is approx. 2 hours.
Alternative route: the coastal route, from Somerset West through Strand and Betty’s Bay, is also very nice but will take you 40 to 60 minutes longer.