Quinta de São Bernardo Winery & Farmhouse

A working winery beside the Douro with seven rooms upstairs, essentially. The estate kept its old agricultural bones and wrapped them in clean, modern interiors, so you get stone walls and good linens rather than one or the other. Five rooms look straight out over the river, as does the infinity pool, which makes the other two a harder sell. Tastings and vineyard tours run on-site, and the restaurant leans on what the farm produces. The Michelin Guide awarded it one Key.