Stayed for 3 nights in the studio and was very pleased with the accomodation. Amazing views from the private terrace. Marcos is very helpful and an excellent host. We took the metro from the airport to the Casa de Musica then a taxi (6€) to the studio. You can walk down the hill from the studio in a few minutes where you can take the no. 1 or 18 tram and the 500 bus (the €10 48 hour tram pass is good value and useful for going to the coast and up into town to connect with the no. 22 tram) - you can walk by the river to the Ribeira in 20 minutes. There is a good supermarket close to the tram stops - several bars on the walk into town. We took a taxi back to the airport (which Marcos booked for us) €20. Porto is a great place to visit with plenty to do and see.