Considering the Ibis Porto Sao Joao in Porto?
A VT member wrote the following comment about visiting Porto:
Porto wine caves by micas_pt
While visiting Porto you should not miss the chance to taste Porto wine (sweet wine). Best way to do it is to cross Douro to the other side and in Vila Nova de Gaia you will find all major makes. They all allow (paid) visit to their caves and some wine tasting. I'm sure you won't regret doing this because that sweet wine is very good. If you are talking a walk along the river near Ribeira neighbourhood and look at the other side you will notice some big houses by the river with names written - those are some of the Porto wine caves.