Daniela was great.
The apartment is cozy, cute and very nice. It is very close to the center, at a walking distance from everything there is to see in Porto. The area is also authentic, not much touristic at all, with lots of nice places to eat at.
Daniela was amazing: she welcomed us and explained the main things to know about the city. She also gave us a lot of suggestions for places to see, good spots, nice restaurants and so on, and wrote them all down on a map.
Thanks to her our stay in Porto was better!