We were driving from San Antonio to Fredericksburg (scenic route) and drove by this little place. We turned around and went back. Glad we did. The owner was very nice. The wine was really good. You can take a self guided tour.
If you like Merlot, they have a great one. The winery is in an old cotton gin and you are free to tour the facility. It looks like they are trying to expand across the street as signs have been put up.