My family and I had a wonderful stay of 11 days in Laura's apartment. The location and facilities were perfect, you really have everything within walking distance. The relax thing was the patio and garden where you every day wake up and can look at to every day. There is also a supermarket at the end of the same street..... another 2 greengrocery in the same street and next door is also a pharmacy. From the airport you are in half an hour by metro airport stop to Bolhoa stop and then it is not yet 5 minutes walk to the apartment.
I heartily recommend Laura's apartment for a stay (again :-)) in Porto.