Vinícola Mentridana – calle San Eugenio 9. Open 7 days a week, from 1pm until 1am Sunday – Thursday, and from 1pm until 2am Friday-Saturday. Metro Antón Martín (Line #1). For additional information click on the following link Vinícola Mentridana Wine Bar (in English).
By the way I had the opportunity to taste a Godello wine, a white wine from a not very well known varietal of which I’m quite fond recently.