We did not meet Joana but we were warmly welcomed by a friend of hers. The apartment wasn't cleaned when we arrived but we just had to wait for the cleaning service shortly so it was no problem. The accomodation itself was really lovely and well situated, we had everything we needed and really enjoyed our stay! Just be prepared to carry your luggage up to the sixth floor - there's no elevator.
All in all we can definitely recommend the apartment and wouldn't hesitate to come again!