Silvia's flat is the perfect accomodation for exploring the city of Porto.
It is easily accessible from the airport due to the proximity of the metro station "Trindade". Since Porto is also not a huge city, doing sight-seeing by foot is possible and recommendable. Within 10 minutes walk, you can easily reach the historic parts of the city. Grocery shopping as well as some really nice portuguese restaurants are close by.
In addition, Silvia provides the guest with the best information on the city. The communication with her is very good and the flat is tidy and well equipped.
I can only recommend to stay at her place!!!