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Santo Tomas Boutique and Winery - This popular facility is located near San Antonio de las Minas. It is the vinyards for the Bodegas de Santo Thomas winery in Enseanada. Owner Jorge G. Barrios has an alliance with the winery and operates an intriguing and interesting wine tasting room and art gallery . He offers wine tasting, tours, art exhibits, special events, catered dining and more.
Open Wed - Sun from 9AM -1PM (646)174-6051 or (646)947-6050 cell

Vina Liceaga -The vineyard is located at km 93 in valley of San Antonio de las Minas, Baja California. It was established in 1983, by an aquisition of 20 hectares of land on the Ensenada Tecate Highway. At Vina Liceaga they capture the magic of the vineyard through their selected wines. Their facility in the next five years will produce 10000 cases of wine. Wine tastings reservations not required, but recommended.
Open: M-F from 8AM - 5PM, Sat/Sun from 11AM - 5PM (646) 155-3093

Vinisterra - is located in the town of San Antonio de las Minas, 25 km east of Ensenada. Winemaking at Vinisterra has as a premise the greatest respect for the fruit that every vineyard gives us each year. The idea is to intervene minimally as far as technology is concerned, encouraging the full expression of the grape’s origin and the climatic conditions of that year. Tasting reservations required weekdays.
Open: Sat from 11AM - 5PM, Sun from 11AM - 4PM (646) 178-3350

Vinos Casa De Piedra - The vineyard is located at km 93.5 in valley of San Antonio de las Minas, Baja California. At Casa de Piedra, we have endeavored to make "Estate Wine" using the grapes from the area and its diverse microclimates. Utilizing the latest technology combined with the expertise and sensibility of our winemakers, we have attained a level upon which, each bottle exclusively reflects the personality of the land. Reservations required for tasting.
(646) 155-3097

Actually, San Antonio de las Minas lies very much east of Ensenada. There are also 14+ interesting wineries along Route 3, in addition to the ones you've mentioned. Monte Xanic, Bibayoff, Tres Mujeres, and L.A. Cetto are a few in the "must see" category.

Duly noted and thread title "adjusted". Thanks...