5 stars!! Carolina is absolutely lovely and extremely helpful! Very easy to communicate with, flexible around our plans, and helped us make our move into the suite herself in person.
The apartment is a nicely appointed with minimalist design, extremely clean and well cared for, and of a good size for the two of us using it. There is a good size bedroom with lots of room for hanging clothes, and a small tv area attached to a large kitchen. The marble bathroom is also spacious including a large tub. The apartment is even nicer than in the pictures! There is an elevator if you aren't able to use stairs to get to the third floor.
The location is perfect as it is central to everything you could want (walk one direction 10 mins across the bridge to the port houses; 10 mins the other direction into the old town), close to the train, bus, and subway stations. The apartment has a gorgeous view overlooking the old downtown area that is especially beautiful at night.
Everything was great! We hope to stay here again on our next visit to Porto.