This is a great location to discover Porto and surroundings. Sonia is an excellent host, very helpful and easy too communicate with and speaks excellent English. The appartment and terrace are spacious and well maintained, kitchen has all you need along with towels and windscreen and some toys to go to the beach. If the old Porto city center is too busy you can enjoy the many beaches along this stretch of the coast line which has a great waterfront with plenty of bars, restaurants and a supermarket. It is also less than an hour drive from Aveiro, although the best part of Aveiro are some of its more expensive restaurants and the beaches and lagoon (canal tour is rather disapointing).
Getting to Porto (Ribeira).
The appartment is not exactly close to the old city center, but if you are up for a bit of a walk, you can walk over to the Luis I bridge and cable car along the lovely waterfront passing the nature reserve and Arrabida bridge. This side of the river provides great views of the city and Ribeira quarter. You can also hire a bicycle, take a local bus or just use uber which cost around 6 euro between the Teleferico de Gaia and the appartment. Driving a car and finding a parking space in old Porto can be extremely challenging we turned in our rental car in Porto center and used Uber to get to the airport far cheaper and more convenient than having your own car to explore the city.