If you're looking for a home-base to pop in and out of as you tour around Porto, this is it. Mario's apartment is ideal for a single or couple who plan on making the most out of their time in the city. The location is absolutely unbeatable, everything we wanted to see and do was less than 1mi away from the apartment which meant we didn't have to plan to be out all day - we actually returned to the apartment once or twice a day to drop off newly acquired souvenirs, change shoes/clothes, or for a quick nap.
As a bonus, Mario was kind enough to let us leave our bags in his office downstairs for a couple hours between check out and our next leg of travel.