Isabel is the best host possible in my opinion - I've never met such an open and friendly person, who was really helpful, charming and contributed to our perfect stay.
The apartment is really nice, has all the equipment, is spacious and placed in a great spot - both near the center and in the area that's not filled to the bone with tourists. A perfect place for a stay.
Apart from that, it's located near to a place where a lot of locals celebrate Sao Joao - something that's undescribable and is a must-see for anyone who wants to know and feel what Porto is about!
If anyone is hesitating - don't! Just come to Isabel in Portu and live your own journey. :)