Marcus H!!
Google
Having visited Portugal, I can tell you the wine is authentic and offers a true Português experience.
The tours are free and the hosts are very well versed. It is not an overly vast bond, so don't expect vaults and vaults and vaults. It is relatively small but offers a very vivid history.
One taste is included, it is free. Unfortunately, you're not able to tip the servers for their hard work.
It is a beautiful space, recently renovated and modern, to be admired.