Would totally recommend." (Edt)
"Me and a friend did the tour with Nuno, he's a very cool guy, knows alot of the good spots around porto, and the backstory behind the city and the sites, would definitely recommended, saw some really cool spots and stuff you wouldnt expect like the different graffitti artists and their work. Alongside the more traditional sites to see.
I wouldnt hesitate to recommend! very good way to spend the afternoon".(Gary)