We stayed 3 nights at C&A's place and were very glad. The apartment is reeeeally nice and in a truly portuguese style. We were warm welcomed by Alexandra who has told us so many things about Porto! The best places to eat and to meet the sunset. Where to go to try true portuguese portwein. That all you can discover only from locals.
It was a little cold in the house, but maybe the season is to blame (early March).
So, thank you, Catarina and Alexandra once more! Highly recommended place :)