It was a pleasure staying at Sonia's. Along with Mariana, her daughter, they gave us many precious information, fruits, water, milk were waiting for us , as well as some leftovers from previous guests, very useful.
The location of the flat is great, bus 500 runs very close to the house (stop Passeio Alegre, just by the Pharmacy). There are grocery stores at a 10 mn walk and 2 restaurants nearby.
There is also a mini shopping place just across the house selling only a few things including water, milk , potatoes or onions, as well as a hairdresser's right next to the house.
Don't miss the pretty Church 5 mn walk from the house, and a nice evening walk by the river Douro. Surfing lessons are also possible nearby.
The Yellow bus line for tourist tours also stop on Passeio Alegre.