I and one of my friend visited Porto and rented the flat of Rafaela and Celio`s flat. The best thing with the flat is the location. It is directly at the center of the city can easily be reached by public transport from airport. You can walk everywhere in the old city and do not need to take any public transport. We had a very nice welcome and Rafaela gave us the keys and brought even some fruits and coffee . She gave us also maps of the city and some businesscards of good restaurants in the city. The flat is small but had everything what we needed. Well designed and prepared for the guests. Two bedrooms, a bathroom and a small living room with TV, fridge and a coffee machine!. There is also Wifi available. There are a lot of nice bars and restaurants around (therefore it was a bit loud outside especially on Friday and saturday nights). Communication with Rafaela through whatsup was very easy. Hope to be there again.