The Fitness Center at Grande Hotel do Porto
Grande Hotel Do Porto's fitness center is acknowledged by professional travelers. Out of 7 publications that we tracked, 2 praised the fitness center, such as Oyster and Frommer's.
Grande Hotel do Porto 
Oyster
Frommer's
Oyster "A small fitness center and elegant meeting spaces are nice extras, but there's a fee for parking"
Frommer's "There is also a small gym and wellness room, offering a selection of massages"
