We found this place online by their website and reached out to them for a visit. Mario, who…read morebasically runs a one-man shop at this vineyard, e-mailed us back and invited us for a tour. We visited in late November, so there were no grapes still left on the vines, but Mario went into great detail about the history of the location and the land, the types of grapes they used, how 95% of vines in the world are actually grown from a graft with American root stock, etc. It was my first vineyard tour so it was really interesting to learn about the process.
After a tour of the outside, he took us inside to show us where the wine was made. It is small--he said between 12,000 and 15,000 bottles are made annually--and it was really interesting to see the different equipment used.
There was no wine to taste, but he did have a few bottles left for sale. They ranged from €6.50 for the Sauvignon blanc to €10.00 for the Chardonnay, and we picked up one of each plus a bottle of Merlot-Aragonês and another bottle of red. The only bottle we didn't buy was the Rose. I did see some of this wine in local stores and in the duty free section at the airport, but otherwise it isn't sold outside of the Azores.
If you do get in touch with Mario and decide to visit, be forewarned that it is a bit tough to find. The address (Quinta da Jardinete Rua dos Montes Nª Srª do Carmo 23 9545-243 Fenais da Luz) is correct, but the location on Google maps is a bit off (I put in a request on December 6, 2015 to change it) and the building is very nondescript. There are high stone walls all around the property so you can't actually see any of the vines (which according to Mario is instrumental in creating the micro-climate for the wines), and there isn't a sign indicating a winery, but believe me, it's there
I highly recommend reaching out to Mario and having a visit if you have time!