Before the stay at this studio Elói answered all my questions and was very helpful with the planification and booking. He also send me a description of how to get to the apartment from the airport and what metro ticket to buy. Like this arriving was really easy.
Elói and Miguel are very nice and open-minded. They welcomed me and gave me lots of locals' information about what to see, where to go out, where to have the nicest views, the best shops, etc. They took their time and offered me their help for anything.
The studio could not be situated better : it's in the heart of the city center and all touristic attractions as well as good restaurants, bars, and cafes are just around the corner.
The studio was perfectly clean, nicely furnished and just had everything one needs. From the balcony one has a fantastic view above the rooftops of the old town and to the other side of the river Douro.
I really enjoyed my stay and definitely would stay again at this studio.