There's a separate gated entrance to the THV off the main road. It is not manned, so you have to be staying there to have access. You can walk there from SSR also, although our THV was near the entrance and would have been a long walk (and there are no sidewalks once you're in the THV area). You can also take a bus to the THV from SSR (it's a separate internal bus). If you are staying their without a car, I think they will drive you and your luggage to your villa.